Intrinsic pinning by naturally occurring correlated defects in FeSe1-xTex superconductors

AMIGÓ, M.L.; CRIVILLERO, M. V. ALE; FRANCO, D.G.; BADIA-MAJÓS, A.; GUIMPEL, J.; CAMPO, J.; DAMAY, F.; PORCHER, F.; CONDÓ, A.M.; NIEVA, G.

SUPERCONDUCTOR SCIENCE AND TECHNOLOGY

IOP PUBLISHING LTD

Año: 2017 vol. 30

0953-2048

We study the angular dependence of dissipation in the superconducting state of FeSe and Fe(Se1-xTex) through electrical transport measurements, using crystalline intergrown materials. We reveal the key role of the inclusions of the non superconducting magnetic phase Fe1-y(Se1-xTex), growing into the Fe(Se1-xTex ) pure β-phase, in the development of a correlated defect structure. The matching of both atomic structures defines the growth habit of the crystalline material as well as the correlated planar defects orientation.