Finite-frequency noise in a topological superconducting wire
| Autor: | Rosario Fazio, Michele Governale, Fabio Taddei, Stefano Valentini |
|---|---|
| Přispěvatelé: | Valentini, Stefano, Governale, Michele, Fazio, Rosario, Taddei, Fabio |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Topological superconductor
Topological degeneracy Quantum electron transport Hybrid superconducting systems Topological superconductors Current-current correlations Nanowire FOS: Physical sciences 02 engineering and technology engineering.material Topology 01 natural sciences Hybrid superconducting system Quantum mechanics 0103 physical sciences Bound state Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Topological order 010306 general physics Physics Superconductivity Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Superconducting wire Supercurrent 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials MAJORANA engineering 0210 nano-technology |
| Zdroj: | Physica. E, Low-dimensional systems and nanostructures (2016). doi:10.1016/j.physe.2015.08.028 info:cnr-pdr/source/autori:S. Valentini, M. Governale, R. Fazio, and F. Taddei/titolo:Finite-frequency noise in a topological superconducting wire/doi:10.1016%2Fj.physe.2015.08.028/rivista:Physica. E, Low-dimensional systems and nanostructures (Print)/anno:2016/pagina_da:/pagina_a:/intervallo_pagine:/volume |
| Popis: | In this paper we study the finite-frequency current cross-correlations for a topological superconducting nanowire attached to two terminals at one of its ends. Using an analytic 1D model we show that the presence of a Majorana bound state yields vanishing cross-correlations for frequencies larger than twice the applied transport voltage, in contrast to what is found for a zero-energy ordinary Andreev bound state. Zero cross-correlations at high frequency have been confirmed using a more realistic tight-binding model for finite-width topological superconducting nanowires. Finite-temperature effects have also been investigated. Comment: Contribution for the special issue of Physica E in memory of Markus B\"uttiker. 9 pages, 7 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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