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ID 43716
本文ファイル
著者
Hayashi, Yuya
Takai, Shun
Matsumura, Takeshi 大学院先端物質科学研究科 広大研究者総覧
Tanida, Hiroshi 大学院先端物質科学研究科
Sera, Masafumi 大学院先端物質科学研究科
Matsubayashi, Kazuyuki
Uwatoko, Yoshiya
Ochiai, Akira
NDC
物理学
抄録(英)
We have measured the electrical resistivity of cerium monochalcogenides, CeS, CeSe, and CeTe, under high pressures of up to 8 GPa. The pressure dependences of the antiferromagnetic ordering temperature TN, crystal field splitting, and the ln T anomaly of the Kondo effect have been studied to cover the entire region from the magnetic ordering regime at low pressure to the Fermi liquid regime at high pressure. TN initially increases with increasing pressure, and starts to decrease at high pressure as expected from Doniach’s diagram. Simultaneously, the ln T behavior in the resistivity is enhanced, indicating the enhancement of the Kondo effect by pressure. It is also characteristic of CeXc that the crystal field splitting rapidly decreases at a common rate of -12:2 K/GPa. This leads to the increase in the degeneracy of the f state and the further enhancement of the Kondo effect. It is shown that the pressure-dependent degeneracy of the f state is a key factor for understanding the pressure dependence of TN, the Kondo effect, magnetoresistance, and the peak structure in the temperature dependence of resistivity.
内容記述
This work was supported by JSPS KAKENHI Grant Numbers 2430087 and 15K05175.
掲載誌名
Journal of the Physical Society of Japan
85巻
3号
開始ページ
034704-1
終了ページ
034704-7
出版年月日
2016
出版者
The Physical Society of Japan
一般社団法人日本物理学会
ISSN
0031-9015
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2016 The Physical Society of Japan
Copyright (c) 2016 一般社団法人日本物理学会
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
関連情報URL
部局名
先端物質科学研究科