Anomalies in Free Flux-Flow Hall Effect

19 September 1994

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 73 (12) , 1699-1702
https://doi.org/10.1103/physrevlett.73.1699

Abstract

The low-

T_{c}

layered superconductor

2 H - Nb {Se}_{2}

shows remarkable results for free flux-flow Hall effect. At low magnetic fields, the Nozières-Vinen result of a field-independent Hall angle appears to hold. At larger fields, a marked departure occurs leading to an extremely sharp and pronounced minimum slightly below

H_{c 2}

, unaccounted for in the standard theoretical models. The results suggest the existence of collective dynamics and phase transitions (such as melting) in a clean flux line lattice.

Keywords

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