Successive phase transitions and energy-gap formation in CeRhAs

Physical Review B - Condensed Matter and Materials Physics 66 巻 4 号 041103-1-041103-4 頁 2002-07-16 発行
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タイトル ( eng )
Successive phase transitions and energy-gap formation in CeRhAs
作成者
Sasakawa Tetsuya
Suemitsu T.
Bando Yoshio
Jung M. H.
Fujita Toshizo
Nakajima Motoki
Iwasa Kazuaki
Kohgi Masafumi
Paul Ch.
Berger St.
Bauer Ernst D.
収録物名
Physical Review B - Condensed Matter and Materials Physics
66
4
開始ページ 041103-1
終了ページ 041103-4
抄録
Magnetic, transport, and x-ray diffraction measurements on single-crystal CeRhAs, the so-called Kondo insulator, have revealed successive transitions at T1=370, T2=235, and T3=165 K. Below T1, the unit cell is doubled along the b and c axes. Thereby, the resistivity jumps upwards and magnetic susceptibility in all the directions drops. Superlattice reflections at (0,1/3,1/3) and (1/3,0,0) appear at T,T2. The latter suddenly increases below T3 where a transport gap is enhanced. These observations indicate that the gap formation is intimately related to lattice modulations.
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 2002-07-16
権利情報
Copyright (c) 2002 American Physical Society.
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0163-1829
[DOI] 10.1103/PhysRevB.66.041103
[NCID] AA00362255
[DOI] http://dx.doi.org/10.1103/PhysRevB.66.041103