1. "Photoluminescence quenching in cobalt doped ZnO nanocrystals"
    Sekika Yamamoto
    J. Appl. Phys. 111, 094310 (2012).
  2. "Photo-enhanced band-edge luminescence in ZnO nanocrystals dispersed in ethanol"
    Sekika Yamamoto
    J. Phys. Chem. C 115, 21635–21640 (2011).
  3. "Observation of Dark Exciton Luminescence from ZnO Nanocrystals in Quantum Confinement Regime"
    Sekika Yamamoto and Tomobumi Mishina,
    Phys. Rev. B 83, 165435 (2011).
  4. "Enhanced band-edge photoluminescence from MgO passivated ZnO nanocrystals"
    Sekika Yamamoto and Tomobumi Mishina,
    J. Luminescence 131, 620 (2011).
  5. "Exciton luminescence dynamics in ZnO crystal observed under one and two-photon excitation"
    Sekika Yamamoto, Hikari Sakuma and Tomobumi Mishina,
    Jpn. J. Appl. Phys. 49, 121102 (2010).
  6. "Phonon screening in photochemically doped zinc oxide nanocrystals"
    Sekika Yamamoto, Tomobumi Mishina,
    J. Appl. Phys. 103 (2008) 74305.
  7. "Decay Dynamics of Ultraviolet Photoluminescence in ZnO Nanocrystals"
    Sekika Yamamoto, Hiroyuki Yano, Tomobumi Mishina, Jun'ichiro Nakahara,
    J. Luminescence 126 (2007) 257-262.
  8. "Pressure dependence of local structure in liquid carbon disulfide"
    Sekika Yamamoto, Yasuhiko Ishibashi, Yasuhiro Inamura, Yoshinori Katayama, Tomobumi Mishina, Jun'ichiro Nakahara,
    J. Chem. Phys. 124(2006)144511.
  9. "Femtosecond pump-probe studies of phonons and carriers in bismuth under high pressure"
    M. Kasami, T. Ogino, T. Mishina, S. Yamamoto, J. Nakahara,
    J. Luminescence 119-120, 428-432 (2006).
  10. "Topological Change of Fermi Surface in Bismuth under High Pressure"
    M. Kasami, T. Ogino, T. Mishina, S. Yamamoto, and J. Nakahara
    Topology in Ordered Phases: Proceedings of the 1st International Symposium on Top 2005 Sapporo, Japan 7 - 10 March 2005, 119-123
  11. "Coherent longitudinal acoustic phonons in pyrite"
    M. Kasami, T. Mishina, S. Yamamoto, J. Nakahara
    J.Luminescence 108 (2004) 291-295
  12. "OPTICAL KERR EFFECT IN CARBON DISULFIDE UNDER HIGH PRESSURE"
    A. Ishizumi, M. Kasami, T. Mishina, S. Yamamoto and J. Nakahara
    High Pressure Research vol.23 No.3 201-204 (2003)
  13. "Dynamical and Structural Properties of Liquid Carbon Disulfide under High Pressure"
    S. Yamamoto, T. Mishina, and J. Nakahara
    Proceedings of The 3rd International Symposium on New Trends of Physics, Hokkaido University, November 11-12, 2003
  14. "Broad Raman scattering and luminescence in beta-carotene solution"
    R. Nakamura, S. Yamamoto, and J. Nakahara
    Journal of Chemical Physics 117 (2002) 238-247
  15. "Pressure dependence of low-frequency light scattering in carbon disulfide"
    A. Ishizumi, S. Yamamoto, J. Nakahara
    Journal of Luminescence 94-95 (2001) 687-690
  16. "Pressure Dependence of the Birefringence in AgGaS$_2$"
    M. Nakanishi, S. Yamamoto, T. Matsuhashi, D. Goshima, and J. Nakahara
    phys. stat. sol (b) 223 (2001) 325
  17. "Optical Properties of Chalcopyrite: Especially Related to f-electrons"
    J. Nakahara, K. Itoh, S. Yamamoto, and A. Ishizumi
    Ternary and Multinary Compounds in the 21st Century IPAP Books 1(2001)251-255
  18. "Line shape of excitation spectra of photoluminescence in CdMnTe and its quantum wells "
    K. Takamura, S. Yamamoto, and J. Nakahara
    Proc. 25th Intl. Conf. Phys. Semicond. 1(2001)274
  19. "Photoluminescence spectra of CuAlS$_2$ doped with Er"
    J. Nakahara, K. Itoh, K. Sato, S. Yamamoto
    J. Luminescece 87-89 (2000) 1112-1114
  20. "Energy Transfer between Mn Ions in Semimagnetic Semiconductors"
    S. Yamamoto, K. Takamura, J. Nakahara
    phys. stat. sol. (b) 211 (1999) 111-116
  21. "Decay Process of Photoluminescence in CdMnTe"
    J. Nakahara, K. Takamura, and S. Yamamoto
    phys. stat. sol.(b) 211 (1999) 223
  22. "Pressure Dependence of Photoluminescence Spectra in CuAlS$_2$ Doped with Lanthanide"
    K. Itoh, S. Yamamoto, K. Sato and J. Nakahara
    Rev. High Pressure Sci. Technol. 7 (1998) 769-771
  23. "Energy Relaxation between Quantum Levels and 3d-Multiplet States in Barriers of CdMnTe/CdTe Quantum Wells"
    J. Nakahara, K. Takamura, and S. Yamamoto
    Proc. 24th Intl. Conf. Phys. Semicond. (1998) VIII Defects and Impurities C-1
  24. "Polarized Photoluminescence with Long Lifetime in AgGaS$_2$"
    J. Nakahara, Y. Narita, K. Itoh, E. Niwa, K. Masumoto and S. Yamamoto
    phys. stat. sol (b) 210 (1998) 479
  25. "Excitation Spectra in CdMnTe"
    K. Takamura, S. Yamamoto, J. Watanabe, and J. Nakahara
    Proc. 11th Int. Conf. Ternary and Multinary Compounds.
    Inst. Phys. Conf. Ser. 152 (1998) 453-456
  26. "Optical Properties in zing-blende MnTeSb films"
    K. Takamura, S. Miyanishi, S. Yamamoto, H. Akinaga and J. Nakahara
    Proc. 11th Int. Conf. Ternary and Multinary Compounds.
    Inst. Phys. Conf. Ser. 152 (1998) 613-616
  27. "Decay profiles of Mn photoluminescence in CdMnTe"
    S. Yamamoto, J. D. Park and J. Nakahara
    Proc. 11th Int. Conf. Ternary and Multinary Compounds.
    Inst. Phys. Conf. Ser. 152 (1998) 457-460
  28. "Electron Scattering by Mn Impurities in Si Detected by Cyclotron Resonance Measurement"
    Sekika Yamamoto, and Tyuzi Ohyama
    Jpn. J. Appl. Phys. 36 (1997) 1112-1118
  29. "Decay Profiles of Mn2+ Photoluminescence in CdMnTe"
    Jae Dong Park, Sekika Yamamoto, Junji Watanabe, Koji Takamura, and Jun'ichiro nakahara
    J. Phys. Soc. Jpn. 66 (1997) 3289-3293
  30. "Mn Concentration Dependence of Excitation Spectrum of Infrared Photo-luminescence in CdMnTe"
    K. Takamura, S. Yamamoto, J. Watanabe and J. Nakahara
    The 2nd Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors (1997) 19-22
  31. "Decay Profiles of Mn$^{2+}$ Photoluminescence in CdMnTe"
    J. D. Park, K. Takamura, S. Yamamoto, J. Watanabe and J. Nakahara
    The 2nd Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors (1997) 15-18
  32. "Temperature Dependence of Mn$^{2+}$ Optical Transition in Mn Based Semimagnetic Semiconductors"
    K. Takamura, S. Yamamoto, S. Miyanishi, H. Akinaga and J. Nakahara
    Proc. 3nd Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors (1997) 144-147
  33. "Pressure Dependence of Photoluminescence Spectra in CuAlS$_2$ Doped with Lanthanide"
    K. Itoh, S. Yamamoto, K. Sato and J. Nakahara
    Proc. Int. Conf. on High Pressure Sci. Tech.(AIRPT16) (1997) 769-771
  34. "Excitation Spectrum of infrared photoluminescence in CdMnTe"
    K. Takamura, J. D. Park, S. Yamamoto and J. Nakahara
    Transaction of the Materials Research Society of Japan Vol.20 (1996) 762-765
  35. "Electron Scattering by Transition Metal Impurities in Silicon"
    Sekika Yamamoto, Tyuzi Ohyama
    Proceedings of 23rd Intl. Conf. Phys. Semicond. 4 (1996) 2721-2724
  36. "Decay Process of CdMnTe with Variation of Excitation Power"
    J. D. Park, K. Takamura, S. Yamamoto, J. Watanabe and J. Nakahara
    Symposium on the Physics and Application of Spin-Related Phenomena in Semiconduc tors (1995) 87-88
  37. "Electron Scattering by Magnetic Impurity in Semiconductor"
    S. Yamamoto, T. Ohyama and J. Nakahara
    Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors (1995) 97-100
  38. "Influence of Interface Barrier on Lateral Transport Properties for Metal/Semiconductor Systems"
    Sekika Yamamoto, Tyuzi Ohyama, Eizo Otsuka, Syouichi Yamauchi, and Motohiro Iwami
    Jpn. J. Appl. Phys. 33 (1994) 3971-3978
  39. "Construction of a Soft X-Ray Emission Spectroscopy(SXES) Apparatus and Its Application for Study of Electronic and Atomic Structures of a Multilayer System."
    Motohiro Iwami, Masaaki Hirai, Masahiko Kusaka, Mosaru Kubota, Sekika Yamamoto,
    Hatsuo Nakamura, Hirokuni Watanabe, Masao Kawai, and Hiroyoshi Soezima
    Jpn. J. Appl. Phys. 29 (1990) 1353-1356
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