Magnetic-field asymmetry of nonlinear thermoelectric and heat transport

Hwang, Sun-Yong; Sánchez, David; Lee, Minchul; López, Rosa
New Journal of Physics 15, 105012 (1-17) (2013)

Nonlinear transport coefficients do not obey, in general, reciprocity relations. We here discuss the magnetic-field asymmetries that arise in thermoelectric and heat transport of mesoscopic systems. Based on a scattering theory of weakly nonlinear transport, we analyze the leading-order symmetry parameters in terms of the screening potential response to either voltage or temperature shifts. We apply our general results to a quantum Hall antidot system. Interestingly, we find that certain symmetry parameters show a dependence on the measurement configuration.


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