Attractive electron-electron interaction induced by geometric phase in a Bloch band

作     者：JunRen Shi Qian Niu JunRen Shi;Qian Niu

作者机构：International Center for Quantum MaterialsPeking UniversityBeijing 100871China Collaborative Innovation Center of Quantum MatterBeijing 100871China Department of PhysicsUniversity of Texas at AustinAustin TX 78712USA 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2020年第63卷第2期

页      面：146-149页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：supported by the Program of “One Hundred Talented People” of Chinese Academy of Sciences the National Natural Science Foundation of China(Grant No.10604063) supported by the Welch Foundation(Grant No.F-1255) 

主　　题：interaction. interaction attractive 

摘      要：Attractive interaction between electrons(or neutral fermions)is responsible for superconductivity(or superfluidity).In condensed matter systems,attractive interaction is usually induced by the boson-exchange mechanism[1].Indeed,in the celebrated Bardeen-Cooper-Schreiffer(BCS)theory,electrons develop attractive interaction by exchanging phonons[2].Subsequent studies show that other collective excitations such as charge density waves[3]and spin fluctuations[4]can also induce attractive *** bosonexchange mechanism,together with the concept of Cooperpair,is considered to be the cornerstone of the modern theory of superconductivity.