Shan, Zhaoyang, Biswas, Pabitra K., Ghosh, Sudeep Kumar, Tula, Tymoteusz, Hillier, Adrian D., Adroja, Devashibhai, Cottrell, Stephen, Cao, Guang-Han, Liu, Yi, Xu, Xiaofeng, and others. (2022) Muon spin relaxation study of the layered kagome superconductor CsV3Sb5. Physical Review Research, 4 (3). Article Number 033145. E-ISSN 2643-1564. (doi:10.1103/PhysRevResearch.4.033145) (KAR id:107460)
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| Official URL: https://doi.org/10.1103/PhysRevResearch.4.033145 |
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Abstract
The Z2 topological metals RV3Sb5 (R = K, Rb, Cs) with a layered kagome structure provide a unique opportunity to investigate the interplay between charge order, superconductivity, and topology. Here, we report muon-spin relaxation/rotation (μSR) measurements performed on CsV3Sb5 across a broad temperature range, in order to uncover the nature of the charge density wave order and superconductivity in this material. From zero-field μSR, we find that spontaneous magnetic fields appear below 50 K, which is well below the charge density wave transition (T ∗ ∼ 93 K). We show that these spontaneous fields are dynamic in nature making it difficult to associate them with a hidden static order. The superconducting state of CsV3Sb5 is found to preserve time-reversal symmetry, and the transverse-field μSR results are consistent with a superconducting state that has two fully open gaps.
| Item Type: | Article |
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| DOI/Identification number: | 10.1103/PhysRevResearch.4.033145 |
| Uncontrolled keywords: | charge density waves; superconducting gap; superfluid density |
| Subjects: | Q Science > QC Physics |
| Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
| Funders: |
National Natural Science Foundation of China (https://ror.org/01h0zpd94)
Science and Technology Facilities Council (https://ror.org/057g20z61) |
| Depositing User: | Tymoteusz Tula |
| Date Deposited: | 07 Oct 2024 13:50 UTC |
| Last Modified: | 08 Oct 2024 08:11 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/107460 (The current URI for this page, for reference purposes) |
University of Kent Author Information
Ghosh, Sudeep Kumar.
| Creator's ORCID: |
 https://orcid.org/0000-0002-3646-0629
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| CReDIT Contributor Roles: |
Tula, Tymoteusz.
| Creator's ORCID: |
https://orcid.org/0000-0001-9820-4615
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| CReDIT Contributor Roles: |
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