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Berry-phase-mediated topological thermoelectric transport in gapped single and bilayer graphene
2009
Physical Review B
We consider the anomalous thermoelectric transport in gapped single and bilayer graphene where the gap may be due to broken inversion symmetry. In the presence of the gap, non-trivial Berry phase effects can be shown to mediate a transverse thermoelectric voltage in response to an applied temperature gradient even in the absence of a perpendicular magnetic field. This spontaneous, anomalous Nernst effect is nonzero for non-uniform chemical potential in the two inequivalent valleys in the
doi:10.1103/physrevb.79.245424
fatcat:5paj5bx2gjh5hdm2tmdiydessi