Nonlocal thermoelectricity in a topological Andreev interferometer

被引:19
作者
Blasi, Gianmichele [1 ,2 ]
Taddei, Fabio [1 ,2 ]
Arrachea, Liliana [3 ,4 ]
Carrega, Matteo [1 ,2 ,5 ]
Braggio, Alessandro [1 ,2 ]
机构
[1] Scuola Normale Super Pisa, NEST, I-156126 Pisa, Italy
[2] Inst Nanosci CNR, I-156126 Pisa, Italy
[3] ECyT UNSAM, Int Ctr Adv Studies, Campus Miguelete,25 Mayo & Francia, RA-1650 Buenos Aires, DF, Argentina
[4] ICIFI, Campus Miguelete,25 Mayo & Francia, RA-1650 Buenos Aires, DF, Argentina
[5] SPIN CNR, Via Dodecaneso 33, I-16146 Genoa, Italy
关键词
QUANTUM; THERMOPOWER; STATE; HEAT;
D O I
10.1103/PhysRevB.102.241302
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We discuss the phase-dependent nonlocal thermoelectric effect in a topological Josephson junction in contact with a normal-metal probe. We show that, due to the helical nature of topological edge states, nonlocal thermoelectricity is generated by a purely Andreev interferometric mechanism. This response can be tuned by imposing a Josephson phase difference, through the application of a dissipationless current between the two superconductors, even without the need of applying an external magnetic field. We discuss in detail the origin of this effect and we also provide a realistic estimation of the nonlocal Seebeck coefficient which turns out to be of the order of a few mu V/K at temperatures of a few kelvin.
引用
收藏
页数:6
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