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- Title
Topology‐Controlled Thermopower Oscillations in Multiterminal Andreev Interferometers.
- Authors
Dolgirev, Pavel E.; Kalenkov, Mikhail S.; Zaikin, Andrei D.
- Abstract
We theoretically investigate coherent oscillations of the thermopower S as a function of the magnetic flux Ф in six‐terminal Andreev interferometers. We demonstrate that the thermopower behavior is determined by a number of contributions originating from the Josephson‐ and Aharonov–Bohm‐like effects as well as from electron–hole asymmetry. The relative weight of these contributions depends on the relation between temperature, voltage bias, and an effective Thouless energy of our setup. We particularly emphasize the role of the system topology that may have a dramatic impact on the behavior of S(Ф). Oscillations of the thermopower S as a function of the magnetic flux Ф in six‐terminal Andreev interferometers are studied in detail. Such oscillations are due to a nontrivial interplay between Josephson‐ and Aharonov–Bohm‐like effects as well as electron–hole asymmetry generated by multiple Andreev reflections. The system topology may play an essential role in the dependence S(Ф).
- Subjects
INTERFEROMETERS; TOPOLOGY; THERMOELECTRIC power; ELECTRIC oscillators; ANDREEV reflection; MAGNETIC flux
- Publication
Physica Status Solidi - Rapid Research Letters, 2019, Vol 13, Issue 1, pN.PAG
- ISSN
1862-6254
- Publication type
Article
- DOI
10.1002/pssr.201800252