Effect of nonmagnetic defects on superconducting and transport properties of Ba(Fe1–x Co x As)2 high-T c superconductors

Autor:	V. A. Dravin, A. Yu. Tsvetkov, S. Yu. Gavrilkin, I. S. Blokhin, O. M. Ivanenko, F. Kurt, K. Aida, Boris Gorshunov, S. I. Krasnosvobodtsev, Elena S. Zhukova, K. V. Mitsen
Rok vydání:	2015
Předmět:	Superconductivity Condensed Matter::Materials Science X-ray spectroscopy Ion implantation Materials science Condensed matter physics Solid-state physics Condensed Matter::Superconductivity Transition temperature General Physics and Astronomy Irradiation Symmetry (physics) Ion
Zdroj:	Journal of Experimental and Theoretical Physics. 121:853-859
ISSN:	1090-6509 1063-7761
DOI:	10.1134/s1063776115110102
Popis:	The effect of nonmagnetic defects on superconducting and transport properties of Ba(Fe0.94Co0.06As)2 films is studied for obtaining information on the symmetry type of the order parameter for superconducting pnictides. Such defects are generated in the film by irradiation by He+ ions with an energy of 200 keV. It is found that a decrease in superconducting transition temperature T c upon an increase in the concentration of nonmagnetic defects in this compound occurs much more slowly than predicted in the model assuming s ±-wave symmetry of the order parameter. Joint analysis of the influence of nonmagnetic defects on the superconducting and magnetotransport properties of such films leads to the conclusion that superconductivity is completely suppressed in them after critical disorder is attained, which assumes the s ++-wave symmetry.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e79e3ca41eaaec115af48b534fdd22b https://doi.org/10.1134/s1063776115110102 Zobrazit plný text záznamu Plný text ve formátu PDF