化学
超导电性
凝聚态物理
联轴节(管道)
自旋(空气动力学)
泡利不相容原理
晶体结构
临界场
反对称关系
物理
结晶学
热力学
机械工程
工程类
数学物理
作者
Yoshinori Watanabe,Hiroto Arima,Aichi Yamashita,Akira Miura,Chikako Moriyoshi,Yosuke Goto,Chul‐Ho Lee,Ryuji Higashinaka,Hidetomo Usui,Shogo Kawaguchi,Kazuhisa Hoshi,Yoshikazu Mizuguchi
摘要
We report the observation of superconductivity in (Pt0.2Ir0.8)3Zr5 with a chiral space group (P6122) at low temperatures. The bulk nature of the superconductivity at a transition temperature of 2.2 K was confirmed using specific heat measurements. We revealed that (Pt0.2Ir0.8)3Zr5 obeys the weak-coupling Bardeen–Cooper–Schrieffer model, and the dominant mechanism in the upper critical field is the orbital pair-breaking limit rather than the Pauli–Clogston limit. This indicates that the antisymmetric spin–orbit coupling caused by the chiral crystal structure does not significantly affect the superconductivity of (Pt0.2Ir0.8)3Zr5.
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