Anomalous spin Josephson effect in spin superconductors

作     者：曾文 沈瑞 Wen Zeng;Rui Shen

作者机构：School of Physics and Electronic EngineeringJiangsu UniversityZhenjiang 212013China Jiangsu Engineering Research Center on Quantum Perception and IntelligentDetection of Agricultural InformationZhenjiang 212013China National Laboratory of Solid State Microstructures and School of PhysicsNanjing UniversityNanjing 210093China Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2024年第33卷第3期

页      面：126-131页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

基　　金：Project supported by the National Key R&D Program of China(Grant No.2022YFA1403601) 

主　　题：tunneling junction spin supercurrent 0-πtransition anomalous spin Josephson effect 

摘      要：The spin superconductor state is the spin-polarized triplet exciton condensate,which can be viewed as a counterpart of the charge superconductor *** an analogy of the charge Josephson effect,the spin Josephson effect can be generated in the spin superconductor/normal metal/spin superconductor *** we study the spin supercurrent in the Josephson junctions consisting of two spin superconductors with noncollinear spin *** the Josephson junctions with out-of-plane spin polarizations,the possibleπ-state spin supercurrent appears due to the Fermi momentum-splitting Andreev-like reflections at the normal metal/spin superconductor *** the Josephson junctions with in-plane spin polarizations,the anomalous spin supercurrent appears and is driven by the misorientation angle of the in-plane *** symmetry analysis shows that the appearance of the anomalous spin Josephson current is possible when the combined symmetry of the spin rotation and the time reversal is broken.