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Œ΄’˜˜_•Ά    ‘Ϋ‰ο‹c    ƒgƒbƒvƒy[ƒW‚Φ–ί‚ι

Œ΄’˜˜_•Ά

 

  • Thermal features of Heisenberg antiferromagnets on edge- versus corner-sharing triangular-based lattices:
    A message from spin waves.
    S. Yamamoto and J. Ohara:
    J. Phys. Commun. 7, No. 6, 065004, 1-34 (2023).
  • Topological characterization of Kitaev spin nanoribbons with ordered flux configurations.
    R. Tadokoro and S. Yamamoto:
    JPS Conf. Proc. 38, 011160, 1-6 (2023).
  • Multimagnon-mediated Raman scattering in two-dimensional quasiperiodic Heisenberg antiferromagnets.
    S. Yamamoto and J. Ohara:
    J. Phys.: Conf. Ser. 2461, No. 1, 012012, 1-8 (2023).
  • Polarized Raman response of two-dimensional quasiperiodic antiferromagnets: Configuration-interaction versus Green's function approaches.
    T. Inoue and S. Yamamoto:
    J. Phys. Soc. Jpn. 91, No. 5, 053701, 1-5 (2022) arXiv2204.00345.
  • Photoinduced bidirectional magnetism against monodirectional electronics in square-antiprismatic octacyanometalates (Editors' Choice).
    J. Ohara and S. Yamamoto:
    J. Phys. Soc. Jpn. 89, No. 9, 093706, 1-5 (2020) arXiv:2008.00411.
  • Projective symmetry group analysis of inelastic light scattering in Kitaev spin balls.
    T. Kimura and S. Yamamoto:
    Phys. Rev. B 101, No. 21, 214411, 1-18 (2020) arXiv:2005.05679.
  • Raman scattering polarization and single spinon identification in two-dimensional Kitaev quantum spin liquids.
    S. Yamamoto and T. Kimura:
    J. Phys. Soc. Jpn. 89, No. 6, 063701, 1-5 (2020) arXiv:2005.05678.
  • Optical observation of fermionic partons in Kitaev spin balls.
    S. Yamamoto and T. Kimura:
    J. Phys.: Conf. Ser. 1220, No. 1, 012003, 1-4 (2019).
  • Raman scattering mediated by Majorana fermions in Kitaev nanoribbons.
    K. Suzuki and S. Yamamoto:
    J. Phys.: Conf. Ser. 1220, No. 1, 012046, 1-4 (2019).
  • Spin-wave thermodynamics of square-lattice antiferromagnets revisited.
    S. Yamamoto and Y. Noriki:
    Phys. Rev. B 99, No. 9, 094412, 1-17 (2019) arXiv:1903.03769.
  • Photocontrollable mixed-valent states in platinum-halide ladder compounds.
    J. Ohara and S. Yamamoto:
    Applied Sciences 8, No.11, 2126, 1-15 (2018).
  • Photoinduced itinerant ferromagnetism in copper octacyanomolybdates.
    J. Ohara and S. Yamamoto:
    J. Phys.: Conf. Ser. 868, No.1, 012013, 1-8 (2017).
  • Modified spin-wave theory on low-dimensional Heisenberg ferrimagnets: A new robust formulation.
    Y. Noriki and S. Yamamoto:
    J. Phys. Soc. Jpn. 86, No. 3, 034714, 1-19 (2017).
  • Antiferromagnetic order in single crystals of the S = 2 quasi-linear chain MnCl3(bpy) (Editors' Suggestion).
    S. Shinozaki, A. Okutani, D. Yoshizawa, T. Kida, T. Takeuchi, S. Yamamoto, O. N. Risset, D. R. Talham, M. W. Meisel and M. Hagiwara:
    Phys. Rev. B 93, No. 1, 014407, 1-6 (2016).
  • Nuclear spin-lattice relaxation at field-induced level crossings in a Cr8F8 pivalate single crystal.
    S. Yamamoto:
    Physica B 481, 224-231 (2016).
  • Photorefinement of the mixed ground state of a platinum-iodide nanotubular assembly.
    J. Ohara, L. Zhang and S. Yamamoto:
    JPS Conf. Proc. 3, 016020, 1-7 (2014).
  • Photoinduced directional and bidirectional phase transitions in bistable linear polycyclic aromatic compounds.
    L. Zhang and S. Yamamoto:
    J. Phys. Soc. Jpn. 83, No. 6, 064708, 1-14 (2014).
  • Phototunable magnetism in copper cctacyanomolybdate.
    J. Ohara and S. Yamamoto:
    Sci. World J. 2014, 762765, 1-13 (2014).
  • NMR observations of level crossings in a Cr8F8 pivalate single crystal: The solution to the structured enhancement of 1/T1.
    J. Ohara and S. Yamamoto:
    J. Kor. Phys. Soc. 62, No. 12, 1797-1801 (2013).
  • Symmetry argument of cyano-bridged copper-molybdenum complexes.
    J. Ohara and S. Yamamoto:
    J. Kor. Phys. Soc. 62, No. 12, 1797-1801 (2013).
  • Magnetic properties of the S = 2 Heisenberg antiferromagnetic chain compound MnCl3(bpy).
    M. Hagiwara, Y. Idutsu, Z. Honda and S. Yamamoto:
    J. Phys.: Conf. Ser. 400, No. 3, 032014, 1-4 (2012).
  • Phase competition and photomagnetism in supramolecular assemblies based on cctacyanomolybdates of the square antiprism configuration.
    S. Yamamoto and J. Ohara:
    Physica Status Solidi C 9, No. 12, 2565-2569 (2012).
  • Theoretical scenario for the proton NMR observation of field-induced level crossings in a single crystal of [Cr8F8(piv)16].
    S. Yamamoto:
    J. Phys. Soc. Jpn. 81, No. 6, 063705, 1-4 (2012).
  • Bottom-up realization of a porous metal-organic nanotubular assembly.
    K. Otsubo, Y. Wakabayashi, J. Ohara, S. Yamamoto, H. Matsuzaki, H. Okamoto, K. Nitta, T. Uruga and H. Kitagawa:
    Nature Mater. 10, 291-295 (2011).
  • Photoinduced structural phase transitions in polyacene.
    S. Yamamoto:
    J. Phys. Soc. Jpn. 80, No. 8, 084713, 1-13 (2011).
  • Ground-state properties of a Peierls-Hubbard triangular prism. chain complexes.
    S. Yamamoto, J. Ohara and M. Ozaki:
    J. Phys. Soc. Jpn. 79, 044709, 1-8 (2010).
  • Optical distinction and photoinduced phase transition between degenerate ground statesof polyacene.
    S. Yamamoto and J. Ohara:
    Physica B 405, S365-S368 (2010).
  • Phase diagram of the frustrated spin ladder.
    Toshiya Hikihara and Oleg A. Starykh:
    Phys. Rev. B 81, 064432, 1-12 (2010).
  • Magnetic phase diagram of the spin-1/2 antiferromagnetic zigzag ladder.
    Toshiya Hikihara, Tsutomu Momoi, Akira Furusaki, and Hikaru Kawamura:
    Phys. Rev. B 81, 224433, 1-20 (2010).
  • Photoproduction of spin and charge carriers in halogen-bridged binuclear platinum chain complexes.
    J. Ohara and S. Yamamoto:
    Europhy. Lett. 87, 17006, 1-6 (2009).
  • Optical characterization of ground states of polyacene.
    S. Yamamoto and J. Ohara:
    J. Mater. Sci.: Mater. Electron. 20, 235205, S367-S370 (2009).
  • Multichanneled relaxation of halogen-bridged diplatinum chain complexes photoexcited.
    S. Yamamoto and J. Ohara:
    Phys. Status Solidi C 6, 144-148 (2009).
  • Ferromagnetism in armchair graphene nanoribbons.
    H.-H. Lin, T. Hikihara, H.-T. Jeng, B.-L. Huang, C.-Y. Mou and X. Hu:
    Phys. Rev. B 79, 035405, 1-9 (2009).
  • Photoproduction of spin and charge carriers in halogen-bridged binuclear platinum chain complexes.
    S. Yamamoto and J. Ohara:
    J. Phys.: Condens. Matter 20, 415215, 1-9 (2008).
  • Optical characterization of ground states of polyacene.
    S. Yamamoto:
    Phys. Rev. B 78, 235205, 1-7 (2008).
  • Magnetic phase diagram of spin-1/2 two-leg ladder with four-spin ring exchanges.
    T. Hikihara and S. Yamamoto:
    J. Phys. Soc. Jpn. 77, 014709, 1-9 (2008).
  • Vector chiral and multipolar orders in the spin-1/2 frustrated ferromagnetic chain in magnetic field.
    Toshiya Hikihara, Lars Kecke, Tsutomu Momoi, and Akira Furusaki:
    Phys. Rev. B 78, 144404, 1-19 (2008).
  • Low-energy structure of the intertwining double-chain ferrimagnets A3Cu3(PO4)4 (A=Ca,Sr,Pb).
    S. Yamamoto and J. Ohara:
    Phys. Rev. B 76, 014409, 1-8 (2007).
  • Optical characterization of platinum-halide ladder compounds.
    S. Yamamoto and J. Ohara:
    Phys. Rev. B 76, 235116, 1-8 (2007).
  • Spin coupling in zigzag Wigner crystals.
    A. D. Klironomos, Julia S. Meyer, T. Hikihara, and K. A. Matveev:
    Phys. Rev. B 76, 075302, 1-11 (2007).
  • Nonlinear lattice relaxation of photoexcited diplatinum-halide chain compounds.
    J. Ohara and S. Yamamoto,
    Phys. Rev. B 73, No. 045122, 1-7 (2006).
  • Competing ground states of metal-halide ladders.
    K. Funase and S. Yamamoto:
    J. Phys. Soc. Jpn. 75, No. 044717, 1-5 (2006).
  • Evidence for multimagnon-mediated nuclear spin relaxation in the intertwining double-chain ferrimagnet Ca3Cu3(PO4)4.
    S. Yamamoto, H. Hori, Y. Furukawa, Y. Nishisaka, Y. Sumida, K. Yamada, K. Kumagai, T. Asano and Y. Inagaki:
    J. Phys. Soc. Jpn. 75, No. 074703, 1-5 (2006).
  • Spin dynamics in molecular ring nanomagnets: Significant effect of acoustic phonons and magnetic anisotropies.
    S. Yamamoto and T. Hikihara:
    J. Phys. Soc. Jpn. 75, No. 103701, 1-4 (2006).
  • Effects of edges in spin-1/2 bond-alternating Heisenberg chains: Matrix-product variational approach.
    K. Funase and S. Yamamoto:
    Phys. Lett. A 334, No. 2-3, 220-225 (2005).
  • Photoinduced absorption spectra of halogen-bidged binuclear metal complexes: Possible contrast between R4[Pt2(P2O5H2)4X]₯nH2O and Pt2(CH3CS2)4I.
    J. Ohara and S. Yamamoto:
    J. Phys. Soc. Jpn. 74, No. 1, 250-253 (2005).
  • Modified spin-wave theory of nuclear magnetic relaxation in one-dimensional quantum ferrimagnets: Three-magnon versus Raman processes.
    S. Yamamoto and H. Hori:
    J. Phys. Soc. Jpn. 74, Suppl., 75-79 (2005).
  • Transport in gapped quantum antiferromagnets.
    T. Sakai and S. Yamamoto:
    J. Phys. Soc. Jpn. 74, Suppl., 191-195 (2005).
  • Low-temperature thermodynamics of one-dimensional alternating-spin Heisenberg ferromagnets.
    S. Yamamoto and H. Hori:
    Phys. Rev. B 72, No. 054423, 1-6 (2005).
  • Fermionic versus bosonic descriptions of one-dimensional spin-gapped antiferromagnets.
    S. Yamamoto and K. Funase:
    Low Temp. Phys. 31, No. 8, 740-747 (2005).
  • Renormalization of impurity scattering in one-dimensional interacting electron systems in magnetic field.
    T. Hikihara, A. Furusaki and K. A. Matveev:
    Phys. Rev. B 72, No. 035301, 1-10 (2005).
  • Phase transitions in spin-orbital coupled model for pyroxene titanium oxides.
    T. Hikihara and Y. Motome:
    J. Phys. Soc. Jpn. 74, Suppl., 212-215 (2005).
  • Duality relations and exotic orders in electronic ladder systems.
    T. Momoi and T. Hikihara:
    J. Phys. Soc. Jpn. 74, Suppl., 226-233 (2005).
  • Effects of the electron-phonon interaction on the charge ordering in quasi-one-dimensional charge-transfer salts.
    H. Hori and S. Yamamoto,
    Synth. Met. 152, No. 1-3, 409-412 (2005).
  • Transport properties of organic spin-gapped antiferromagnets.
    T. Sakai and S. Yamamoto:
    Synth. Met. 152, No. 1-3, 477-480 (2005).
  • Photoinduced infrared absorption of quasi-one-dimensional halogen-bridged binuclear transition-metal complexes.
    J. Ohara and S. Yamamoto:
    J. Phys. Chem. Solids 66, No. 8, 1571-1574 (2005).
  • Interplay among spin, orbital and lattice degrees of freedom in t2g electron systems with edge-sharing network of octahedra.
    Y. Motome, H. Tsunetsugu, T. Hikihara, N. Shannon and K. Penc,
    Prog. Theor. Phys. Suppl. 159, 314-318 (2005).
  • Bosonic representation of one-dimensional Heisenberg ferrimagnets.
    S. Yamamoto:
    Phys. Rev. B 69, No. 064426, 1-9 (2004).
  • Static and dynamic properties of antiferromagnetic Heisenberg ladders: Fermionic versus bosonic approaches.
    H. Hori and S. Yamamoto:
    J. Phys. Soc. Jpn. 73, No. 3, 549-552 (2004).
  • Nuclear magnetic relaxation in the Haldane-gap antiferromagnet Ni(C2H8N2)2NO2(ClO4).
    S. Yamamoto and H. Hori:
    J. Phys. Soc. Jpn. 73, No. 4, 822-825 (2004).
  • Nuclear spin-lattice relaxation in one-dimensional Heisenberg ferrimagnets: Three-magnon versus Raman processes.
    H. Hori and S. Yamamoto:
    J. Phys. Soc. Jpn. 73, No. 6, 1453-1456 (2004).
  • Soliton-induced optical absorption of halogen-bridged mixed-valence binuclear metal complexes.
    J. Ohara and S. Yamamoto:
    Phys. Rev. B 70, No. 115112, 1-5 (2004).
  • Nuclear magnetic relaxation in the ferrimagnetic chain compound NiCu(C7H6N2O6)(H2O)3₯2H2O: Three-magnon scattering?
    H. Hori and S. Yamamoto:
    J. Phys.: Condens. Matter 16, No. 49, 9023-9029 (2004).
  • Effects of edges in spin-1/2 bond-alternating Heisenberg chains: Matrix-product variational approach.
    K. Funase and S. Yamamoto:
    Phys. Lett. A 334, No. 2-3, 220-225 (2004).
  • Correlation Amplitudes for the spin-1/2 XXZ chain in a magnetic field.
    T. Hikihara and A. Furusaki:
    Phys. Rev. B 69, No. 064427, 1-11 (2004).
  • Boundary contributions to specific heat and susceptibility in the spin-1/2 XXZ chain.
    A. Furusaki and T. Hikihara:
    Phys. Rev. B 69, No. 094429, 1-5 (2004); Phys. Rev. B 70, No. 189902, 1-1 (2004).
  • Orbital and spin interplay in spin-gap formation in pyroxene ATiSi2O6 (A= Na,Li).
    T. Hikihara and Y. Motome:
    Phys. Rev. B 70, No. 214404, 1-12 (2004).
  • Spinless fermions versus spin waves in describing antiferromagnetic Heisenberg ladders.
    H. Hori and S. Yamamoto:
    J. Mag. Mag. Mat. 272-276, 269-270 (2004).
  • Scalar chiral order in spin ladders with four-spin exchanges.
    T. Momoi, T. Hikihara and M. Nakamura:
    J. Mag. Mag. Mat. 272-276, 914-915 (2004).
  • Nuclear spin-lattice relaxation in ferrimagnetic clusters and chains: A contrast between zero and one dimensions.
    H. Hori and S. Yamamoto:
    Phys. Rev. B 68, No. 5, 054409, 1-6 (2003).
  • Quantum and thermal phase transitions in the Bechgaard salts and their analogs.
    H. Hori and S. Yamamoto:
    Synth. Met. 135-136, 557-558 (2003).
  • Spin-wave description of Haldane-gap antiferromagnets.
    S. Yamamoto and H. Hori:
    J. Phys. Soc. Jpn. 72, No. 4, 769-772 (2003).
  • Pressure effects on an S = 1 Haldane compound Ni(C5H14N2)2N3(PF6).
    M. Mito, H. Akama, H. Deguchi, S. Takagi, T. Kawae, K. Takeda, M. Yamashita, H. Nakao, Y. Murakami and S. Yamamoto:
    J. Phys. Soc. Jpn. 72, No. 2, 399-404 (2003).
  • Possible nonlinear excitations in quasi-one-dimensional halgen-bridged binuclear metal complexes.
    S. Yamamoto:
    Phys. Rev. B 66, No. 16, 165113, 1-8 (2002).
  • Fermionic description of spin-gap states of antiferromagnetic Heisenberg ladders in a magnetic field.
    H. Hori and S. Yamamoto:
    J. Phys. Soc. Jpn. 71, No. 6, 1607-1608 (2002).
  • Intrinsic double-peak structure of the specific heat in low-dimensional quantum ferrimagnets.
    T. Nakanishi and S. Yamamoto:
    Phys. Rev. B 65, No. 21, 214418, 1-5 (2002).
  • Re-entrant quantum phase transitions in antiferromagnetic spin-1 ladders.
    S. Yamamoto, T. Sakai and A. Koga:
    J. Phys. Soc. Jpn. 71, No. 5, 1250-1253 (2002).
  • Solitons in quasi-one-dimensional binuclear metal complexes.
    S. Yamamoto:
    Mol. Cryst. Liq. Cryst. 379, 555-560 (2002).
  • Halogen-bridged binuclear metal complexes under static pressure.
    Y. Eguchi and S. Yamamoto:
    Mol. Cryst. Liq. Cryst. 379, 549-554 (2002).
  • Quantum phase competition in antiferromagnetic spin-1 ladders.
    S. Yamamoto, T. Sakai and A. Koga:
    Prog. Theor. Phys. Suppl. 145, 176-181 (2002).
  • Pressure-induced reverse Peierls and Peierls instabilities in halogen-bridged binuclear metal complexes.
    S. Yamamoto:
    J. Phys. Chem. Solids 63, No. 8, 1489-1493 (2002).
  • Soliton excitations in halogen-bridged mixed-valence binuclear metal complexes.
    S. Yamamoto and M. Ichioka:
    J. Phys. Soc. Jpn. 71, No. 1, 189-196 (2002).

Œ΄’˜˜_•Ά    ‘Ϋ‰ο‹c    ƒgƒbƒvƒy[ƒW‚Φ–ί‚ι

‘Ϋ‰ο‹c

 

  • Possible ring exchange and chiral spin fluctuations in quasiperiodic planar antiferromagnets:
    Raman observations (Invited as a Keynote Speech).
    S. Yamamoto:
    The 8th Annual Conference of AnalytiX (AnalytiX-2023),
    2023. 5. 17 ~ 19, Osaka, Japan.
  • Topological characterization of Kitaev spin nanoribbons with ordered flux configurations.
    R. Tadokoro and S. Yamamoto:
    The 29th International Conference on Low Temperature Physics (LT 29),
    2022. 8. 18 ~ 24, Sapporo, Japan.
  • Multimagnon-mediated Raman scattering in two-dimensional quasiperiodic Heisenberg antiferromagnets.
    S. Yamamoto and J. Ohara:
    The 10th International Conference on Aperiodic Crystals (Aperiodic 2022),
    2022. 6. 20 ~ 24, Sapporo, Japan.
  • Optical observation of quasiperiodic Heisenberg antiferromagnets in two dimensions.
    T. Inoue and S. Yamamoto:
    The 14th International Conference on the Structure of Non-Crystalline Materials (NCM14),
    2019. 11. 3 ~ 8, Kobe, Japan.
  • Novel photomagnets Cu2[M (CN)8]ExH2O (M = Mo, W): square-antiprismatic octacyanometalates (Invited).
    S. Yamamoto and J. Ohara:
    The 8th Annual World Congress of Advanced Materials (WCAM-2019),
    2019. 7. 22 ~ 24, Osaka, Japan.
  • Spin-chirality-driven Raman scattering in Penrose-lattice Heisenberg antiferromagnets.
    T. Inoue and S. Yamamoto:
    Interdisciplinary Symposium for Quasicrystals and Strongly Correlated Electron Systems,
    2019. 6. 23 ~ 27, Sendai, Japan.
  • Raman scattering mediated by Majorana fermions in Kitaev nanoribbons.
    K. Suzuki and S. Yamamoto:
    The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018),
    2018. 7. 8 ~ 13, Nara, Japan.
  • Optical observation of fermionic partons in Kitaev spin balls.
    S. Yamamoto and T. Kimura:
    The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018),
    2018. 7. 8 ~ 13, Nara, Japan.
  • Modified-spin-wave description of scattering spectra in frustrated systems (Invited).
    S. Yamamoto and J. Ohara:
    International Workshop on Frontiers in Strongly Correlated Electron System,
    2017. 10. 19 ~ 20, Sapporo, Japan.
  • Photoswitching of bistable homocyclic and heterocyclic aromatic polymers (Invited).
    S. Yamamoto
    Energy Materials Nanotechnology (EMN) Meeting on Optoelectronics 2016,
    2016. 4. 12 ~ 15, Phuket, Thailand.
  • Photoinduced itinerant ferromagnetism in copper octacyanomolybdates.
    J. Ohara and S. Yamamoto:
    International Workshop on Itinerant-Electron Magnetism,
    2015. 9. 25 ~ 27, Kyoto, Japan.
  • Phototunable magnetism in octacyano-bridged bimetallic assemblies (Invited).
    S. Yamamoto and J. Ohara:
    Fujihara Seminar: Real-time Dynamics of Physical Phenomena and Manipulation by External Fields,
    2014. 9. 23 ~ 27 , Tomakomai, Japan.
  • Photorefinement of the mixed ground state of a platinum-iodide nanotube.
    J. Ohara, L. Zhang and S. Yamamoto:
    International Conference on Strongly Correlated Electron Systems (SCES2013),
    2013. 8. 5 ~ 9, Tokyo, Japan.
  • Symmetry argument of cyano-bridged copper-molybdenum complexes.
    J. Ohara and S. Yamamoto:
    The 19th International Conference on Magnetism (ICM 2012),
    2012. 7. 8 ~ 13, Busan, South Korea.
  • NMR observations of level crossings in a Cr8F8 pivalate single crystal: The solution to the structured enhancement of 1/T1.
    S. Yamamoto:
    The 19th International Conference on Magnetism (ICM 2012),
    2012. 7. 8 ~ 13, Busan, South Korea.
  • Phase competition and photomagnetism in supramolecular assemblies based on octacyanomolybdates of the square antiprism configuration.
    S. Yamamoto and J. Ohara:
    International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA 2012),
    2012. 6. 3 ~ 7, Nara, Japan.
  • Magnetic properties of the S=2 Heisenberg antiferromagnetic chain compound MnCl3(bpy).
    M. Hagiwara, Y. Idutsu, Z. Honda and S. Yamamoto:
    The 26th International Conference on Low Temperature Physics (LT26),
    2011. 8. 10 ~ 17, Beijing, China.
  • Photomagnetism in a dicopper octacyanomolybdate
    S. Yamamoto and J. Ohara:
    International Workshop on Dynamics and Manipulation of Quantum Sysytems 2010,
    2011. 2. 13 ~ 15, Tokyo, Japan.
  • Entanglement entropy in 1D critical systems with open boundaries and Sinusoidal deformation.
    T. Hikihara:
    New Development of Numerical Simulations in Low-Dimensional Quantum Systems: From Density Matrix Renormalization Group to Tensor Network Formulations,
    2010. 10. 27 ~ 29, Kyoto, Japan.
  • Effective Dzyalonshinski-Moriya interactions in an octanuclear chromium(III) antiferromagnetic ring: NMR observations of the quantum level crossing.
    S. Yamamoto:
    International Workshop on Statistical Physics of Quantum Systems,
    2010. 8. 2 ~ 4, Tokyo, Japan.
  • Columnar dimer phase in the frustrated spin ladder.
    Toshiya Hikihara and Oleg A. Starykh
    The international conference Highly Frustrated Magnetism 2010,
    2010. 8. 1 ~ 6, Baltimore, USA.
  • A frustrated transition-metal-halide nanotube: Exotic Peierls and Mott transitions.
    J. Ohara and S. Yamamoto:
    International Conference on Science and Technology of Synthetic Metals 2010 (ICSM2010),
    2010. 7. 4 ~ 9, Kyoto, Japan.
  • Photoinduced structural phase transitions in polyacene.
    S. Yamamoto:
    The 2nd International Workshop on Dynamics and Manipluation of Quantum Sysytems (DMQS 2009),
    2009. 10. 13 ~ 16, Tokyo, Japan.
  • Optical distinction and photoinduced phase transition between degenerate ground states of polyacene.
    S. Yamamoto and J. Ohara:
    The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM2009),
    2009. 9. 12 ~ 9. 17, Niseko, Japan.
  • DMRG for Tomonaga-Luttinger liquids.
    T. Hikihara:
    Workshop on Matrix Product State Formulation and Density Matrix Renormalization Group Simulations (MPS&DMRG),
    2009.8.12 ~ 8.13, Kobe, Japan.
  • Nonlinear lattice dynamics of photoexcited diplatinum-halide chain compounds.
    S. Yamamoto and J. Ohara:
    The 1st International Workshop on Dynamics and Manipluation of Quantum Sysytems (DMQS 2008),
    2008. 10. 20 ~ 22, Tokyo, Japan.
  • Multichanneled relaxation of halogen-bridged diplatinum chain complexes photoexcited.
    S. Yamamoto and J. Ohara:
    The 8th International Conference on Excitonic Processes in Condensed Matter (EXCON '08),
    2008. 6. 22 ~ 6. 27, Kyoto, Japan.
  • Optical response of ladder-shaped platinum-halide compounds.
    S. Yamamoto and J. Ohara:
    21st COE International Symposium on Linear Response Theory in Commemoration of Its 50th Anniversary ~ Recent Development in Equilibrium and Non-Equilibrium Response~,
    2007. 11. 5 ~ 11. 7, Tokyo, Japan.
  • Effects of ring exchanges in spin ladder systems.
    T. Hikihara, S. Yamamoto, A. D. Klironomos, J. S. Meyer and K. A. Matveev:
    International Symposium on Physics of New Quantum Phases in Superclean Materials (PSM2007),
    2007. 10. 29 ~ 11. 1, Gifu, Japan.
  • Ring-exchange-induced breakdown of ferrimagnetic ground states.
    J. Ohara, S. Yamamoto and T. Hikihara
    International Symposium on Physics of New Quantum Phases in Superclean Materials (PSM2007),
    2007. 10. 29 ~ 11. 1, Gifu, Japan.
  • Optical observations of new halogen-bridged platinum complexes assembled within a ladder lattice (Invited).
    S. Yamamoto and J. Ohara:
    International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA 2007),
    2007. 7. 30 ~ 8. 3, London, England.
  • Simulated lattice relaxation of photoexcited platinum-halide chains.
    J. Ohara and S. Yamamoto:
    International Conference on Science and Technology of Synthetic Metals (ICSM 2006),
    2006. 7. 2 ~ 7, Dublin, Ireland.
  • Photoinduced Infrared Absorption of Quasi-One-Dimensional Halogen-Bridged Binuclear Transition-Metal Complexes.
    J. Ohara and S. Yamamoto:
    International Symposium on Quantum Condensed System,
    2004. 11. 16 ~ 19, Kashiwa, Japan.
  • Dualities and current-ordered phases in strongly correlated electron systems.
    T. Hikihara and T. Momoi:
    International Conference on Strongly Correlated Electron Systems (SCES '04),
    2004. 7. 26 ~ 7. 30, Karlsruhe, Germany.
  • Transport in gapped quantum antiferromagnets (Invited).
    T. Sakai and S. Yamamoto:
    International Conference on Statistical Physics of Quantum Systems - Novel Orders and Dynamics -,
    2004. 7. 17 ~ 7. 20, Sendai, Japan.
  • Modified spin-wave theory of nuclear magnetic relaxation in one-dimensional quantum ferrimagnets: Three-magnon versus Raman processes (Invited).
    S. Yamamoto and H. Hori:
    International Conference on Statistical Physics of Quantum Systems - Novel Orders and Dynamics -,
    2004. 7. 17 ~ 7. 20, Sendai, Japan
  • Matrix-product variational approach to spin-1/2 ferromagnetic-antiferromagnetic alternating Heisenberg chains.
    K. Funase and S. Yamamoto:
    International Conference on Statistical Physics of Quantum Systems - Novel Orders and Dynamics-,
    2004. 7. 17 ~ 7. 20, Sendai, Japan.
  • Numerical study of thermodynamic properties of NaTiSi2O6.
    T. Hikihara and Y. Motome:
    International Conference on Statistical Physics of Quantum Systems - Novel Orders and Dynamics -,
    2004. 7. 17 ~ 7. 20, Sendai, Japan.
  • Transport properties of organic spin-gapped antiferromagnets.
    T. Sakai and S. Yamamoto:
    International Conference on Science and Technology of Synthetic Metals (ICSM 2004),
    2004. 6. 28 ~ 7. 2, Wollongong, Australia.
  • Effects of the electron-phonon interaction on the charge ordering in quasi-one-dimensional charge-transfer salts.
    H. Hori and S. Yamamoto:
    International Conference on Science and Technology of Synthetic Metals (ICSM 2004),
    2004. 6. 28 ~ 7. 2, Wollongong, Australia.
  • Scalar chiral ground states in the Heisenberg spin ladders with four-spin exchanges.
    T. Hikihara, T. Momoi, M. Nakamura, X. Hu:
    Annual APS (American Physical Society) March Meeting 2004,
    2004. 3. 22 ~ 3. 26, Montreal, Canada.
  • Duality and Exotic Order in Correlated Electron Ladder Systems.
    T. Momoi, T. Hikihara:
    Annual APS (American Physical Society) March Meeting 2004,
    2004. 3. 22 ~ 3. 26, Montreal, Canada.
  • Boundary contribution to specific heat and suceptibility in the spin-1/2 XXZ chain.
    A. Furusaki, T. Hikihara:
    Annual APS (American Physical Society) March Meeting 2004,
    2004. 3. 22 ~ 3. 26, Montreal, Canada.
  • Nuclear spin-lattice relaxation in ferrimagnetic clusters and chains: A contrast between zero and one dimensions (Invited).
    S. Yamamoto and H. Hori:
    International Workshop ``Physics on Nanoscale Magnets",
    2003. 12. 1 ~ 4, Kyoto, Japan.
  • Nuclear spin-lattice relaxation in one-dimensional ferrimagnets: Possibility of the three-magnon scattering process predominating.
    S. Yamamoto and H. Hori:
    Third Open Symposium on Research Project, Grant-in-Aid for Scientific Research on Priority Areas (B): Field-Induced New Quantum Phenomena in Magnetic Systems,
    2003. 11. 26 ~ 28, Kyoto, Japan.
  • Spinless fermions versus spin waves in describing antiferromagnetic Heisenberg ladders.
    H. Hori and S. Yamamoto:
    The 16th International Conference on Magnetism (ICM 2003),
    2003. 7. 27 ~ 8. 1, Roma, Italy.
  • New analytic approaches to antiferromagnetic spin ladders \spinless fermions versus spin-wave bosons\ (Invited).
    S. Yamamoto:
    International Symposium on New Trends of Physics,
    2003. 1. 20 ~ 23, Sapporo, Japan.
  • Fermionic and bosonic descriptions of magnetic excitations in spin ladders.
    S. Yamamoto and H. Hori:
    Second Open Symposium on Research Project, Grant-in-Aid for Scientific Research on Priority Areas (B): Field-Induced New Quantum Phenomena in Magnetic Systems,
    2002. 12. 4 ~ 6, Kobe, Japan.
  • Nuclear spin relaxation in Mn12: A microscopic approach to nano-scale high-spin molecules.
    S. Yamamoto and T. Nakanishi:
    International Conference on Theoretical Physics (TH-2002),
    2002. 7. 22 ~ 27, Paris, France.
  • Quantum and thermal phase transitions in the Bechgaard salts and their analogs.
    H. Hori and S. Yamamoto:
    International Conference on Science and Technology of Synthetic Metals 2002 (ICSM 2002),
    2002. 6. 29 ~ 7. 5, Shanghai, China.
  • A microscopic theory for nano-scale cluster magnets Mn12.
    T. Nakanishi and S. Yamamoto:
    First Open Symposium on Research Project, Grant-in-Aid for Scientific Research on Priority Areas (B): Field-Induced New Quantum Phenomena in Magnetic Systems,
    2002. 3. 11 ~ 13, Kashiwa, Japan.
  • Fermionic description of quantized plateaux in spin ladders.
    H. Hori and S. Yamamoto:
    First Open Symposium on Research Project, Grant-in-Aid for Scientific Research on Priority Areas (B): Field-Induced New Quantum Phenomena in Magnetic Systems,
    2002. 3. 11 ~ 13, Kashiwa, Japan.
  • Intrinsic double-peak structure of the specific heat in low-dimensional quantum ferrimagnets.
    S. Yamamoto:
    The 27th Annual Conference of the Middle European Cooperation in Statistical Physics (MECO-27),
    2002. 3. 7 ~ 9, Sopron, Hungary.

 

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