| Autor: |
Ritu Gupta, Debarchan Das, Charles Hillis Mielke III, Zurab Guguchia, Toni Shiroka, Christopher Baines, Marek Bartkowiak, Hubertus Luetkens, Rustem Khasanov, Qiangwei Yin, Zhijun Tu, Chunsheng Gong, Hechang Lei |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
npj Quantum Materials, Vol 7, Iss 1, Pp 1-8 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2397-4648 |
| DOI: |
10.1038/s41535-022-00453-7 |
| Popis: |
Abstract The recently discovered kagome superconductor CsV3Sb5 (T c ≃ 2.5 K) has been found to host charge order as well as a non-trivial band topology, encompassing multiple Dirac points and probable surface states. Such a complex and phenomenologically rich system is, therefore, an ideal playground for observing unusual electronic phases. Here, we report anisotropic superconducting properties of CsV3Sb5 by means of transverse-field muon spin rotation (μSR) experiments. The fits of temperature dependences of in-plane and out-of-plane components of the magnetic penetration depth suggest that the superconducting order parameter may have a two-gap (s + s)-wave symmetry. The multiband nature of superconductivity could be further supported by the different temperature dependences of the anisotropic magnetic penetration depth γ λ (T) and upper critical field $${\gamma }_{{{{{\rm{B}}}}}_{{{{\rm{c}}}}2}}(T)$$ γ B c 2 ( T ) . The relaxation rates obtained from zero field μSR experiments do not show noticeable change across the superconducting transition, indicating that superconductivity does not break time reversal symmetry. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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