Intrinsic nature of chiral charge order in the kagome superconductor Rb V3Sb5

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

Research output: Contribution to journalArticlepeer-review

106 Scopus citations


Superconductors with kagome lattices have been identified for over 40 years, with a superconducting transition temperature Tc up to 7 K. 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 to study the charge order in kagome superconductor RbV3Sb5. We observe both a 2×2 chiral charge order and nematic surface superlattices (predominantly 1×4). We find that the 2×2 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.

Original languageEnglish (US)
Article number035131
JournalPhysical Review B
Issue number3
StatePublished - Jul 15 2021

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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