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Sign Change of the Flux Flow Hall Effect in HTSC

M. V. Feigel'man·V. B. Geshkenbein·A. I. Larkin·V. M. Vinokur
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Abstract

A novel mechanism for the sign change of the Hall effect in the flux flow region is proposed. The difference $δn $ between the electron density at the center of the vortex core and that far outside the vortex causes the additional contribution to the Hall conductivity $δσ_{xy}=-δn ec/B$. This contribution can be larger than the conventional one in the dirty case $Δ(T)τ<1$. If the carrier density inside the core exceeds that far outside, a double sign change may occur as a function of temperature.

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M. V. Feigel'man, V. B. Geshkenbein, A. I. Larkin, V. M. Vinokur. 1995-03-15. Sign Change of the Flux Flow Hall Effect in HTSC. https://arxiv.org/abs/cond-mat/9503082

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