In:
Chinese Physics B, IOP Publishing, Vol. 31, No. 1 ( 2022-01-01), p. 017404-
Abstract:
The kagome metals A V 3 Sb 5 ( A = K, Rb, Cs) under ambient pressure exhibit an unusual charge order, from which superconductivity emerges. In this work, by applying hydrostatic pressure using a liquid pressure medium and carrying out electrical resistance measurements for RbV 3 Sb 5 , we find that the charge order becomes suppressed under a modest pressure p c (1.4 GPa 〈 p c 〈 1.6 GPa), while the superconducting transition temperature T c is maximized. T c is then gradually weakened with further increase of pressure and reaches a minimum around 14.3 GPa, before exhibiting another maximum around 22.8 GPa, signifying the presence of a second superconducting dome. Distinct normal state resistance anomalies are found to be associated with the second superconducting dome, similar to KV 3 Sb 5 . Our findings point to qualitatively similar temperature–pressure phase diagrams in KV 3 Sb 5 and RbV 3 Sb 5 , and suggest a close link between the second superconducting dome and the high-pressure resistance anomalies.
Type of Medium:
Online Resource
ISSN:
1674-1056
DOI:
10.1088/1674-1056/ac4232
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2022
detail.hit.zdb_id:
2412147-2
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