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Abstract
Here we report muon spin rotation (μSR) experiments on the temperature and field dependence of the effective magnetic penetration depth λ(T ) in the η-carbide-type suboxide Ti4Ir2O, a superconductor with a considerably high upper critical field. The temperature dependence of λ(T ), obtained from transverse-field (TF)-μSR measurements, is in perfect agreement with an isotropic fully gaped superconducting state. Furthermore, our ZF μSR results confirm that the time-reversal symmetry is preserved in the superconducting state. We find, however, a remarkably small ratio of Tc/λ −2 0 ∼ 1.22. This value is close to most unconventional superconductors, showing that a very small superfluid density is present in the superconducting state of Ti4Ir2O. The presented results will pave the way for further theoretical and experimental investigations to obtain a microscopic understanding of the origin of such a high upper critical field in an isotropic single-gap superconducting system.
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Authors (7)
-
Debarchan Das
-
KeYuan Ma
-
Jan Jaroszynski
-
Vahid Sazgari
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Fabian O. von Rohr
-
Zurab Guguchia
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
PHYSICAL REVIEW B
no. 110,
ISSN: 2469-9950 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Das D., Ma K., Jaroszynski J., Sazgari V., Klimczuk T., von Rohr F. O., Guguchia Z.: Ti4Ir2O : A time reversal invariant fully gapped unconventional superconductor// PHYSICAL REVIEW B -Vol. 110,iss. 17 (2024), s.174507-
- DOI:
- Digital Object Identifier (open in new tab) 10.1103/physrevb.110.174507
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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