北海道大学 理学部
物理学科 支援室
〒060-0810
札幌市北区北10条西8丁目
【TEL】011-706-2692
【FAX】011-706-4926
kouhou*phys.sci.hokudai.ac.jp
(*を半角@に変えて入力ください)
![イベント](https://phys.sci.hokudai.ac.jp/jp/img/top_22.png)
日本物理学会北海道支部講演会(第248回エンレイソウの会、物理コロキウム共催)が下記の要領で行われます。
講演題目:Tuning the actinide magnet USb2
講師:Nicholas P. Butch (NIST Center for Neutron Research, University of Maryland, College Park)
日時:2018年6月22日(金) 15:00~16:50
場所:北海道大学理学部5号館3階(低層棟) 5-305
共催:第248回エンレイソウの会、物理コロキウム
要旨:USb2 is a moderately heavy-electron compound with a relatively high antiferromagnetic ordering temperature of 205 K. We have studied how this magnetic state is modified under the extreme conditions of high pressure and high magnetic field. Under pressure, the antiferromagnetic order is destroyed and replaced by ferromagnetism at pressures greater than 10 GPa. This ferromagnetism is stable up to about 30 GPa, above which it is replaced by a non-Fermi liquid region exhibiting strong anomalous T-linear resistivity. Pulsed magnetic fields also destabilize the antiferromagnetism. Our study of magnetostriction and magnetization has identified a new tricritical point at 145K and 52T, which separates the paramagnetic phase from a new high-field phase, which is not yet fully understood. If time permits, I will also briefly discuss ongoing spectroscopic studies of the uranium f state.
世話人:柳澤達也(北海道大学大学院理学研究院物理学部門)