多带笼目超导体CsV_(3)Sb_(5)衍生体系的可调磁通涡旋束缚态

作     者：黄子豪 韩相和 赵振 刘锦锦 李鹏飞 谭恒心 王秩伟 姚裕贵 杨海涛 颜丙海 蒋坤 胡江平 汪自强 陈辉 高鸿钧 Zihao Huang;Xianghe Han;Zhen Zhao;Jinjin Liu;Pengfei Li;Hengxin Tan;Zhiwei Wang;Yugui Yao;Haitao Yang;Binghai Yan;Kun Jiang;Jiangping Hu;Ziqiang Wang;Hui Chen;Hong-Jun Gao

作者机构：Beijing National Center for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100190China Centre for Quantum PhysicsKey Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081China Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic SystemsBeijing Institute of TechnologyBeijing 100081China Department of Condensed Matter PhysicsWeizmann Institute of ScienceRehovot 7610001Israel Hefei National LaboratoryHefei 230088China Department of PhysicsBoston CollegeChestnut Hill MA 02467USA 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2024年第69卷第7期

页      面：885-892页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(61888102,52022105,92065109,and 12174428) the National Key Research and Development Projects of China(2022YFA1204100,2018YFA0305800,2019YFA0308500,2020YFA0308800,and 2022YFA1403400) the CAS Project for Young Scientists in Basic Research(YSBR-003 and 2022YSBR-048) the Innovation Program of Quantum Science and Technology(2021ZD0302700) the financial support from the European Research Council(ERC Consolidator Grant “Nonlinear Topo”,No.815869) ISF-Singapore-Israel Research Grant(3520/20) supported by the US DOE,Basic Energy Sciences(DE-FG02-99ER45747) 

主　　题：Kagome superconductor Chemical doping Vortex lattice transition Vortex bound states Majorana bound states 

摘      要：Vortices and bound states offer an effective means of comprehending the electronic properties of ***,surface-dependent vortex core states have been observed in the newly discovered kagome superconductors CsV_(3)Sb_(5).Although the spatial distribution of the sharp zero energy conductance peak appears similar to Majorana bound states arising from the superconducting Dirac surface states,its origin remains *** this study,we present observations of tunable vortex bound states(VBSs)in two chemically-doped kagome superconductors Cs(V_(1-x)Tr_(x))_(3)Sb_(5)(Tr=Ta or Ti),using low-temperature scanning tunneling microscopy/*** CsV_(3)Sb_(5)-derived kagome superconductors exhibit full-gap-pairing superconductivity accompanied by the absence of long-range charge orders,in contrast to pristine CsV_(3)Sb_(5).Zero-energy conductance maps demonstrate a field-driven continuous reorientation transition of the vortex lattice,suggesting multiband *** Ta-doped CsV_(3)Sb_(5)displays the conventional cross-shaped spatial evolution of Caroli-de Gennes-Matricon bound states,while the Tidoped CsV_(3)Sb_(5)exhibits a sharp,non-split zero-bias conductance peak(ZBCP)that persists over a long distance across the *** spatial evolution of the non-split ZBCP is robust against surface effects and external magnetic field but is related to the doping *** study reveals the tunable VBSs in multiband chemically-doped CsV_(3)Sb_(5)system and offers fresh insights into previously reported Y-shaped ZBCP in a non-quantum-limit condition at the surface of kagome superconductor.