- Abstract:
-
The upper critical field of multiband superconductors is an important quantity that can reveal details about the nature of the superconducting pairing. Here we experimentally map out the complete upper-critical-field phase diagram of a stoichiometric superconductor, CaKFe4As4, up to 90 T for different orientations of the magnetic field and at temperatures down to 4.2K. The upper critical fields are extremely large, reaching values close to ∼3 Tc at the lowest temper...
Expand abstract - Publication status:
- Published
- Peer review status:
- Peer reviewed
- Files:
-
- Publisher copy:
- 10.1103/PhysRevB.101.134502
-
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- Grant:
- EP/I017836/1
- EP/I004475/1
- Publisher:
- American Physical Society Publisher's website
- Journal:
- Physical Review B Journal website
- Volume:
- 101
- Article number:
- 134502
- Publication date:
- 2020-04-07
- Acceptance date:
- 2020-03-02
- DOI:
- EISSN:
-
2469-9969
- ISSN:
-
2469-9950
- Pubs id:
-
1090714
- Local pid:
- pubs:1090714
- Language:
- English
- Keywords:
- Copyright holder:
- American Physical Society
- Rights statement:
- © 2020 American Physical Society
Journal article
Competing pairing interactions responsible for the large upper critical field in a stoichiometric iron-based superconductor CaKFe4As4
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