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Título: | Reversal of Thermoelectric Current in Tubular Nanowires |
Autor: | Erlingsson, Sigurdur I.; Manolescu, Andrei; Nemnes, George Alexandru; Bardarson, Jens H.; Sánchez, David CSIC ORCID | Fecha de publicación: | 21-jul-2017 | Editor: | American Physical Society | Citación: | Physical Review Letters 119(3): 036804 (2017) | Resumen: | We calculate the charge current generated by a temperature bias between the two ends of a tubular nanowire. We show that in the presence of a transversal magnetic field the current can change sign; i.e., electrons can either flow from the hot to the cold reservoir, or in the opposite direction, when the temperature bias increases. This behavior occurs when the magnetic field is sufficiently strong, such that Landau and snaking states are created, and the energy dispersion is nonmonotonic with respect to the longitudinal wave vector. The sign reversal can survive in the presence of impurities. We predict this result for core-shell nanowires, for uniform nanowires with surface states due to the Fermi level pinning, and for topological insulator nanowires. | Versión del editor: | https://doi.org/10.1103/PhysRevLett.119.036804 | URI: | http://hdl.handle.net/10261/174062 | DOI: | 10.1103/PhysRevLett.119.036804 | ISSN: | 0031-9007 | E-ISSN: | 1079-7114 |
Aparece en las colecciones: | (IFISC) Artículos |
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tubular_nanowires.pdf | 401,12 kB | Adobe PDF | Visualizar/Abrir |
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