http://www.cnr.it/ontology/cnr/individuo/prodotto/ID326239

Thermopower of three-terminal topological superconducting systems (Articolo in rivista)

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Label

Thermopower of three-terminal topological superconducting systems (Articolo in rivista) (literal)

Anno

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Alternative label

Valentini, Stefano[ 1,2 ] ; Fazio, Rosario)[ 1,2 ] ; Giovannetti, Vittorio)[ 1,2 ] ; Taddei, Fabio[ 3,4 ] (2015)
Thermopower of three-terminal topological superconducting systems
in Physical review. B, Condensed matter and materials physics
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Valentini, Stefano[ 1,2 ] ; Fazio, Rosario)[ 1,2 ] ; Giovannetti, Vittorio)[ 1,2 ] ; Taddei, Fabio[ 3,4 ] (literal)

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Note

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[ 1 ] Scuola Normale Super Pisa, NEST, I-56127 Pisa, Italy [ 2 ] CNR, Ist Nanosci, I-56127 Pisa, Italy [ 3 ] CNR, Ist Nanosci, NEST, I-56126 Pisa, Italy [ 4 ] Scuola Normale Super Pisa, I-56126 Pisa, Italy (literal)

Titolo

Abstract

We study the thermopower of a three-terminal setup composed of a quantum dot attached to three electrodes, one of which is a topological superconductor. In the model, superconductivity is explicitly taken into account. We compare the results for s-wave (trivial) and p-wave (topological) superconductors and observe that for small temperatures the thermopower has different sign in the two cases. This behavior is strongly dependent on temperature and we estimate an energy scale that controls the sign in the p-wave case, which results proportional to the square root of the gap and the coupling to superconductor. The analytical results obtained with a simple 1D model are confirmed by a more realistic tight-binding model. (literal)

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