Enhanced critical temperatures in the strongly overdoped iron-based superconductors AFe2As2 (A = K, Cs, Rb) observed by point contacts
Abstract
A remarkable several times increase (up to 10 K) of the superconducting critical temperature Tc has been observed in point contacts created on the base of single crystals AFe2As2 (A = K, Cs, Rb). Possible reasons for such a Tc increase in point contacts are briefly discussed on a qualitative level. Among them, it is most likely attributed to interfacial carrier doping and/or uniaxial non-homogeneous pressure arising when the contact is created.
- Publication:
-
Low Temperature Physics
- Pub Date:
- November 2020
- DOI:
- 10.1063/10.0002149
- arXiv:
- arXiv:2009.05339
- Bibcode:
- 2020LTP....46.1070N
- Keywords:
-
- Condensed Matter - Superconductivity
- E-Print:
- 9 pages, 2 figs. 1 table. Accepted to Fizika Nizkikh Temperatur (Low Temperature Physics)