Thermopower and thermal conductance of a superconducting quantum point contact
Sergey S. Pershoguba, Leonid I. Glazman
DOI 10.1103/PhysRevB.99.134514 · Physical Review B
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Abstract
We find the charge and heat currents caused by a temperature difference applied to a superconducting point contact or to a quantum point contact between a superconducting and normal conductors. The results are formulated in terms of the properties of the electron scattering matrix of the quantum point contact in its normal state, and are valid at any transmission coefficient. In the low-transmission limit, the theory provides reliable results, setting the limits for the use of the popular method of the tunneling Hamiltonian.
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