Surface barrier dominated transport in NbSe$_2$

Details Surface barrier dominated transport in NbSe$_2$ Surface barrier dominated transport in NbSe$_2$

1998-08-20

arxiv.org/abs/cond-mat/9808218v1

Phys. Rev. B. 58, R14763 (1998).

Physics

Condensed Matter

Superconductivity

10 pages 4 figures submited to rapid communication Physical Review B

Scientific paper

10.1103/PhysRevB.58.R14763

Transport current distribution in clean 2$H$-NbSe$_{2}$ crystals is studied by measuring the self-induced magnetic field across the sample. Below $T_c$ most of the current flows at the edges of the crystals due to strong surface barriers, which are found to dominate the transport properties and the resistive transition. The measured critical current is determined by the critical current for vortex penetration through the surface barrier rather than by bulk pinning.

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