arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2105.00550cond-mat.str-el
收藏

可果美超导体RbV3Sb5中手征电荷序的本征性质

Intrinsic nature of chiral charge order in the kagome superconductor RbV3Sb5

Nana Shumiya, Md Shafayat Hossain, Jia-Xin Yin, Yu-Xiao Jiang, Brenden R. Ortiz, Hongxiong Liu, Youguo Shi, Qiangwei Yin, Hechang Lei, Songtian S. Zhang, Guoqin… 展开作者

Nana Shumiya, Md Shafayat Hossain, Jia-Xin Yin, Yu-Xiao Jiang, Brenden R. Ortiz, Hongxiong Liu, Youguo Shi, Qiangwei Yin, Hechang Lei, Songtian S. Zhang, Guoqing Chang, Qi Zhang, Tyler A. Cochran, Daniel Multer, Maksim Litskevich, Zi-Jia Cheng, Xian P. Yang, Zurab Guguchia, Stephen D. Wilson, M. Zahid Hasan

摘要:

具有可果美晶格的超导体已经被发现了40多年,超导转变温度TC高达7K。最近,某些kagome超导体已被发现表现出一种奇异的电荷秩序,它与超导性交织在一起,并持续到比TC高一个数量级的温度。在这项工作中,我们使用扫描隧道显微镜(STM)研究可果美超导体RbV3Sb5中的电荷有序。我们观察到一个2x2的手征电荷顺序和表面超晶格(主要是1x4)。我们发现2 × 2电荷序具有内在的手征性和磁场可调性。缺陷可以散射电子以引入驻波,驻波与电荷序耦合以引起非本征效应。虽然手性电荷顺序类似于在KV3Sb5中发现的,但它进一步与KV3Sb5中不存在但存在于CsV3Sb5中的表面超晶格相互作用。

英文摘要:

Superconductors with kagome lattices have been identified for over 40 years, with a superconducting transition temperature TC up to 7K. Recently, certain kagome superconductors have been found to exhibit an exotic charge order, which intertwines with superconductivity and persists to a temperature being one order of magnitude higher than TC. In this work, we use scanning tunneling microscopy (STM) to study the charge order in kagome superconductor RbV3Sb5. We observe both a 2x2 chiral charge order and nematic surface superlattices (predominantly 1x4). We find that the 2x2 charge order exhibits intrinsic chirality with magnetic field tunability. Defects can scatter electrons to introduce standing waves, which couple with the charge order to cause extrinsic effects. While the chiral charge order resembles that discovered in KV3Sb5, it further interacts with the nematic surface superlattices that are absent in KV3Sb5 but exist in CsV3Sb5.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑