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

doi:10.1103/PhysRevB.104.035131

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 journal › Article › peer-review

127 Scopus citations

Abstract

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 language	English
Article number	035131
Journal	Physical Review B
Volume	104
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.104.035131
State	Published - Jul 15 2021
Externally published	Yes

Funding

Experimental and theoretical work at Princeton University was supported by the Gordon and Betty Moore Foundation [Grants No. GBMF4547 and No. GBMF9461 (M.Z.H.)]. The material characterization is supported by the United States Department of Energy (U.S. DOE) under the Basic Energy Sciences program (Grant No. DOE/BES DE-FG-02-05ER46200). S.D.W. and B.R.O. acknowledge support from the University of California Santa Barbara Quantum Foundry, funded by the National Science Foundation (Grant No. NSF DMR-1906325). Research reported here also made use of shared facilities of the UCSB MRSEC (Grant No. NSF DMR-1720256). B.R.O. also acknowledges support from the California NanoSystems Institute through the Elings fellowship program. T.A.C. was supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE-1656466. H.C.L. was supported by National Natural Science Foundation of China (Grants No. 11822412 and No. 11774423), Ministry of Science and Technology of China (Grants No. 2018YFE0202600 and No. 2016YFA0300504), and Beijing Natural Science Foundation (Grant No. Z200005). Y.S. was supported by the National Natural Science Foundation of China (Grant No. U2032204), and the K. C. Wong Education Foundation (Grant No. GJTD-2018-01). G.C. would like to acknowledge the support of the National Research Foundation, Singapore under its NRF Fellowship Award (Award No. NRF-NRFF13-2021-0010) and the Nanyang Assistant Professorship grant from Nanyang Technological University.

Funders	Funder number
Basic Energy Sciences Program	DOE/BES DE-FG-02-05ER46200
California NanoSystems Institute	DGE-1656466
UCSB MRSEC	DMR-1720256
University of California Santa Barbara Quantum Foundry
National Science Foundation	DMR-1906325
U.S. Department of Energy
Gordon and Betty Moore Foundation	GBMF9461, GBMF4547
National Research Foundation Singapore	NRF-NRFF13-2021-0010
Nanyang Technological University
National Natural Science Foundation of China	11774423, 11822412
Ministry of Science and Technology of the People's Republic of China	2016YFA0300504, 2018YFE0202600
Natural Science Foundation of Beijing Municipality	Z200005, U2032204
K. C. Wong Education Foundation	GJTD-2018-01

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10.1103/PhysRevB.104.035131

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Shumiya, N., Hossain, M. S., Yin, J. X., Jiang, Y. X., Ortiz, B. R., Liu, H., Shi, Y., Yin, Q., Lei, H., Zhang, S. S., Chang, G., Zhang, Q., Cochran, T. A., Multer, D., Litskevich, M., Cheng, Z. J., Yang, X. P., Guguchia, Z., Wilson, S. D., & Hasan, M. Z. (2021). Intrinsic nature of chiral charge order in the kagome superconductor Rb V3Sb5. Physical Review B, 104(3), Article 035131. https://doi.org/10.1103/PhysRevB.104.035131

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title = "Intrinsic nature of chiral charge order in the kagome superconductor Rb V3Sb5",

abstract = "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.",

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

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year = "2021",

month = jul,

day = "15",

doi = "10.1103/PhysRevB.104.035131",

language = "English",

volume = "104",

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Shumiya, N, Hossain, MS, Yin, JX, Jiang, YX, Ortiz, BR, Liu, H, Shi, Y, Yin, Q, Lei, H, Zhang, SS, Chang, G, Zhang, Q, Cochran, TA, Multer, D, Litskevich, M, Cheng, ZJ, Yang, XP, Guguchia, Z, Wilson, SD & Hasan, MZ 2021, 'Intrinsic nature of chiral charge order in the kagome superconductor Rb V3Sb5', Physical Review B, vol. 104, no. 3, 035131. https://doi.org/10.1103/PhysRevB.104.035131

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T1 - Intrinsic nature of chiral charge order in the kagome superconductor Rb V3Sb5

AU - Shumiya, Nana

AU - Hossain, Md Shafayat

AU - Yin, Jia Xin

AU - Jiang, Yu Xiao

AU - Ortiz, Brenden R.

AU - Liu, Hongxiong

AU - Shi, Youguo

AU - Yin, Qiangwei

AU - Lei, Hechang

AU - Zhang, Songtian S.

AU - Chang, Guoqing

AU - Zhang, Qi

AU - Cochran, Tyler A.

AU - Multer, Daniel

AU - Litskevich, Maksim

AU - Cheng, Zi Jia

AU - Yang, Xian P.

AU - Guguchia, Zurab

AU - Wilson, Stephen D.

AU - Hasan, M. Zahid

PY - 2021/7/15

Y1 - 2021/7/15

N2 - 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.

AB - 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.

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JO - Physical Review B

JF - Physical Review B

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

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