Enhanced critical temperatures in the strongly overdoped iron-based superconductors AFe$_2$As$_2$ (A = K, Cs, Rb) observed by point contacts
| Autor: | O. E. Kvitnitskaya, Yu. G. Naidyuk, D. V. Efremov, S.-L. Drechsler |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Superconductivity
Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Transition temperature Condensed Matter - Superconductivity Doping FOS: Physical sciences General Physics and Astronomy Atmospheric temperature range Calculation methods Superconductivity (cond-mat.supr-con) Electrical resistivity and conductivity Iron based Superconducting critical temperature |
| Popis: | 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 AFe$_2$As$_2$ (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. 9 pages, 2 figs. 1 table. Accepted to Fizika Nizkikh Temperatur (Low Temperature Physics) |
| Databáze: | OpenAIRE |
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