C-axis Resistivity of Superconductive FeSe Single Crystals: Upper Critical Field and its Angular Behavior
- Sadakov, A.V.
- Romanova, T.A.
- Knyazev, D.A.
- Chareev, D.A.
- Martovitsky, V.P.
Publication date
December 2015
DOI Publisher
The Authors. Published by Elsevier B.V. ISSN
1875-3892Abstract
AbstractWe report out-of-plane magnetotransport ρc(B, T) measurements for a high quality superconducting FeSe single crystals in magnetic fields up to 9 Tesla. Samples, grown from the flux under a permanent gradient of temperature with [001] crystallographic orientation were put in magnetic field parallel to ab-plane. The samples were rotated around c-axis, and its superconducting transitions R(H) were measured for each fixed angle in several temperatures. We show that Hc2 is anisotropic in these relatively small fields, with Hc2||a/Hc2||b being ∼1.2 for T=8.3K
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