Sign Change of the Flux Flow Hall Effect in HTSC
Feigel'man M.V., Geshkenbein V.B., Larkin A.I., Vinokur V.M.
A novel mechanism for the sign-change of the flux flow Hall effect is proposed. The dependence of the superconducting thermodynamic potential Qtc on the chemical potential μ produces the topological contribution to the Hall conductivity 6σΙ9 — — (dO*c/cV)ec/£, which may lead to a double sign-change of the Hall effect as a function of temperature.