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Interlayer transport in highly anisotropic misfit-layer superconductor (LaSe)1.14(NbSe2)

P. Szabo·P. Samuely·J. Kacmarcik·A. G. M. Jansen·A. Briggs·A. Lafond·A. Meerschaut
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Abstract

We show that the interlayer transport in a two-dimensional superconductor can reveal a peak in the temperature as well as the magnetic field dependence of the resistivity near the superconducting transition. The magnetotransport experiment was performed on the highly anisotropic misfit-layer superconductor (LaSe)$_{1.14}$(NbSe$_2$) with critical tempertaure $T_c$ of 1.2 K. The effect is interpreted within the tunneling mechanism of the charge transport across the Josephson-coupled layers via two parallel channels - the quasiparticles and the Cooper pairs. Similar behavior can be found in the high-$T_c$ cuprates but there it is inevitably interfering with the anomalous normal state. The upper critical magnetic field can be obtained from the interlayer tunneling conductance.

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P. Szabo, P. Samuely, J. Kacmarcik, A. G. M. Jansen, A. Briggs, A. Lafond, A. Meerschaut. 2001-05-31. Interlayer transport in highly anisotropic misfit-layer superconductor (LaSe)1.14(NbSe2). https://doi.org/10.1103/physrevlett.86.5990

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