%0 Journal Article
%T Temperature Dependence of the Critical Field of the Organic Superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br
%+ Géosciences Environnement Toulouse (GET)
%A Gasparov, V. A.
%A Audouard, A.
%A Drigo, L.
%A Schlueter, J. A.
%< avec comité de lecture
%J JETP Letters
%V 110
%P 74-78
%8 2019
%D 2019
%Z 2019JETPL.110...74G
%R 10.1134/S0021364019130022
%Z Sciences of the Universe [physics]Journal articles
%X We present upper critical magnetic fields data for κ(BEDT-TTF)2Cu[N(CN)2]Br (hereafter k-Br), single crystals with the magnetic field applied either or perpendicular and parallel to the conducting layers. The H-T phase diagram in these single crystals has been deduced from tunnel diode oscillator-based contactless measurements in pulsed magnetic fields up to 56 T for the inter-plane ( H ∥ b) and in-plane ( H ∥ ac) field directions. Temperature dependence of the magnetic penetration depth in DC fields is also reported. The temperature dependence of the upper critical magnetic field H c2( T) is not accounted for the Werthamer-Helfand-Hohenberg model for in-plane configuration. For the inter-plane orientation, a significant upward curvature is observed as the temperature decreases, in the range close to T c , followed by saturation at lower temperatures. Possibly, this upturn is an indication of flux-line lattice melting.
%G English
%L insu-03661415
%U https://insu.hal.science/insu-03661415
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%~ METEO
%~ UNIV-TLSE3
%~ CNRS
%~ CNES
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%~ OMP-GET
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