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arXiv · 1504.08207

Thermoelectric transport in the topological phase due to the coexistence of superconductivity and spin-density-wave

Amit Gupta·Debanand Sa
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Abstract

We study the thermoelectric transport in two dimensional topological system which has coexistence of superconductivity(SC) and spin-density wave(SDW). The SC is presumed to be of $d_{x^2-y^2}+(p_x + i p_y) $ type whereas the SDW order parameter is of $BCS$ symmetry. The Hamiltonian describing such a coexistence phase is shown to have topological phase in addition to the conventional one. The transport properties in such topological system have two distinct contributions: (i) the surface/edge and (ii) the bulk. The competition between the surface/edge versus the bulk transport is analyzed in different parameter regimes and the possibility of enhancing the figure of merit is discussed.

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Amit Gupta, Debanand Sa. 2015-04-30. Thermoelectric transport in the topological phase due to the coexistence of superconductivity and spin-density-wave. https://doi.org/10.1140/epjb/e2015-60366-0

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