Hysteretic superconducting resistive transition in Ba0.07K0.93Fe2As2
Taichi Terashima, Kunihiro Kihou, Megumi Tomita, Satoshi Tsuchiya, Naoki Kikugawa, Shigeyuki Ishida, Chul-Ho Lee, Akira Iyo, Hiroshi Eisaki, Shinya Uji
DOI 10.1103/PhysRevB.87.184513 · Physical Review B
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Abstract
We have observed hysteresis in superconducting resistive transition curves of Ba0.07K0.93Fe2As2 (Tc∼8 K) below about 1 K for in-plane fields. The hysteresis is not observed as the field is tilted away from the ab plane by 20∘ or more. The temperature and angle dependencies of the upper critical field indicate a strong paramagnetic effect for in-plane fields. We suggest that the hysteresis can be attributed to a first-order superconducting transition due to the paramagnetic effect. Magnetic torque data are also shown.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba0.07K0.93Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.2 | Pressure not reported | unknown |
| Ba0.07K0.93Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.4 | Pressure not reported | unknown |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| KFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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