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arXiv · 1703.06080

Intrinsic pinning by naturally occurring correlated defects in FeSe$_\text{1-x}$Te$_\text{x}$ superconductors

M. L. Amigó·M. V. Ale Crivillero·D. G. Franco·A. Badía-Majós·J. Guimpel·J. Campo·F. Damay·F. Porcher·A. Condó·G. Nieva
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Abstract

We study the angular dependence of the dissipation in the superconducting state of FeSe and Fe(Se$_\text{1-x}$Te$_\text{x}$) through electrical transport measurements, using crystalline intergrown materials. We reveal the key role of the inclusions of the non superconducting magnetic phase Fe$_\text{1-y}$(Se$_\text{1-x}$Te$_\text{x}$), growing into the Fe(Se$_\text{1-x}$Te$_\text{x}$) pure $\beta$-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.

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M. L. Amigó, M. V. Ale Crivillero, D. G. Franco, A. Badía-Majós, J. Guimpel, J. Campo, F. Damay, F. Porcher, A. Condó, G. Nieva. 2017-03-17. Intrinsic pinning by naturally occurring correlated defects in FeSe$_\text{1-x}$Te$_\text{x}$ superconductors. https://doi.org/10.1088/1361-6668%2Faa757c

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