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Threshold electric field in unconventional density waves

Balázs Dóra·Attila Virosztek·Kazumi Maki
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Abstract

As it is well known most of charge density wave (CDW) and spin density wave (SDW) exhibit the nonlinear transport with well defined threshold electric field E_T. Here we study theoretically the threshold electric field of unconventional density waves. We find that the threshold field increases monotonically with temperature without divergent behaviour at T_c, unlike the one in conventional CDW. The present result in the 3D weak pinning limit appears to describe rather well the threshold electric field observed recently in the low-temperature phase (LTP) of alpha-(BEDT-TTF)_2KHg(SCN)_4.

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Balázs Dóra, Attila Virosztek, Kazumi Maki. 2001-01-22. Threshold electric field in unconventional density waves. https://doi.org/10.1103/physrevb.64.041101

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