Global phase diagram of the magnetic field-induced organic superconductors λ-(BETS)2FexGa1-xCl4

被引:49
|
作者
Uji, S [1 ]
Terashima, T
Terakura, C
Yakabe, T
Terai, Y
Yasuzuka, S
Imanaka, Y
Tokumoto, M
Kobayash, A
Saka, F
Tanaka, H
Kobayashi, H
Balicas, L
Brooks, JS
机构
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan
[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan
[3] Univ Tokyo, Grad Sch Sci, Res Ctr Spectrochem, Bunkyo Ku, Tokyo 1130033, Japan
[4] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[5] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
[6] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA
关键词
organic conductor; superconductivity; Jaccarino-Peter effect; high magnetic field;
D O I
10.1143/JPSJ.72.369
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Organic alloys lambda-(BETS)(2)FexGa1-xCl4 show superconductivity only under very high magnetic fields parallel to the conducting layer for x greater than or equal to 0.47. As x decreases, the field induced superconducting phase shifts towards lower fields and a striking field-induced insulator to superconductor transition is observed below 4T for x = 0.45. We show that the overall features of the global phase diagram are well understood in terms of Jaccarino-Peter compensation mechanism. These results provide a new road map for the future design of high magnetic field superconductors.
引用
收藏
页码:369 / 373
页数:5
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