Microscopic outofequilibrium analysis of the zerobias conductance peak in a onedimensional topological superconductor
Abstract
Recently there has been a lot of excitement generated by the possibility of realizing and detecting Majorana fermions within the arena of condensed matter physics and its potential implication for topological quantum computing. In the pursuit of identifying and understanding the signatures of Majorana fermions in realistic systems, we go beyond the lowenergy effectivemodel descriptions of Majorana bound states to derive nonequilibrium transport properties of a topological superconducting wire in the presence of arbitrarily large applied voltages. By virtue of a microscopic calculation we are able to model the tunnel coupling between the superconducting wire and the metallic leads realistically, study the role of highenergy nontopological excitations, predict how the behavior compares for an increasing number of odd versus even number of sites, and study the evolution across the topological quantum phase transition. We consider the Kitaev model as well as its specific realization in terms of a semiconductorsuperconductor hybrid structures. Our results have concrete implications for the experimental search and study of Majorana fermions. Here I provide a brief selected summary of the talk presented during the fourth conference on Nuclei and Mesoscopic Physics (NMP14) which took place during May 5th9th, 2014 at the National Superconducting Cyclotron Laboratory (NSCL),more »
 Authors:
 Department of Physics, University of Cincinnati, OH 452210011 (United States)
 Publication Date:
 OSTI Identifier:
 22307984
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: AIP Conference Proceedings; Journal Volume: 1619; Journal Issue: 1; Conference: 4. conference on nuclei and mesoscopic physics 2014, East Lansing, MI (United States), 59 May 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BOUND STATE; COMPARATIVE EVALUATIONS; COUPLING; ELECTRIC POTENTIAL; EQUILIBRIUM; EXCITATION; FERMIONS; ONEDIMENSIONAL CALCULATIONS; PHASE TRANSFORMATIONS; QUANTUM COMPUTERS; SEMICONDUCTOR MATERIALS; SUPERCONDUCTING WIRES; SUPERCONDUCTORS; TOPOLOGY
Citation Formats
Shah, Nayana. Microscopic outofequilibrium analysis of the zerobias conductance peak in a onedimensional topological superconductor. United States: N. p., 2014.
Web. doi:10.1063/1.4899231.
Shah, Nayana. Microscopic outofequilibrium analysis of the zerobias conductance peak in a onedimensional topological superconductor. United States. doi:10.1063/1.4899231.
Shah, Nayana. Wed .
"Microscopic outofequilibrium analysis of the zerobias conductance peak in a onedimensional topological superconductor". United States.
doi:10.1063/1.4899231.
@article{osti_22307984,
title = {Microscopic outofequilibrium analysis of the zerobias conductance peak in a onedimensional topological superconductor},
author = {Shah, Nayana},
abstractNote = {Recently there has been a lot of excitement generated by the possibility of realizing and detecting Majorana fermions within the arena of condensed matter physics and its potential implication for topological quantum computing. In the pursuit of identifying and understanding the signatures of Majorana fermions in realistic systems, we go beyond the lowenergy effectivemodel descriptions of Majorana bound states to derive nonequilibrium transport properties of a topological superconducting wire in the presence of arbitrarily large applied voltages. By virtue of a microscopic calculation we are able to model the tunnel coupling between the superconducting wire and the metallic leads realistically, study the role of highenergy nontopological excitations, predict how the behavior compares for an increasing number of odd versus even number of sites, and study the evolution across the topological quantum phase transition. We consider the Kitaev model as well as its specific realization in terms of a semiconductorsuperconductor hybrid structures. Our results have concrete implications for the experimental search and study of Majorana fermions. Here I provide a brief selected summary of the talk presented during the fourth conference on Nuclei and Mesoscopic Physics (NMP14) which took place during May 5th9th, 2014 at the National Superconducting Cyclotron Laboratory (NSCL), on the campus of Michigan State University, in East Lansing, Michigan.},
doi = {10.1063/1.4899231},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1619,
place = {United States},
year = {Wed Oct 15 00:00:00 EDT 2014},
month = {Wed Oct 15 00:00:00 EDT 2014}
}

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