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Theory of Dissipationless Nernst Effects
Physical Review Letters
We develop a theory of transverse thermoelectric (Peltier) conductivity, α_xy, in finite magnetic field -- this particular conductivity is often the most important contribution to the Nernst thermopower. We demonstrate that α_xy of a free electron gas can be expressed purely and exactly as the entropy per carrier irrespective of temperature (which agrees with seminal Hall bar result of Girvin and Jonson). In two dimensions we prove the universality of this result in the presence of disorderdoi:10.1103/physrevlett.104.066601 pmid:20366843 fatcat:vdi2m3cwgjeftpz45qlrap5dci