Surface barrier dominated transport in NbSe${}_2$

Abstract

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.

10 pages 4 figures submited to rapid communication Physical Review B

References in corpus (2)

• Possible new vortex matter phases in BSCCO
• Where does the transport current flow in Bi2Sr2CaCu2O8 crystals?

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