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dc.contributor.author
Rizzo, Bruno
dc.contributor.author
Arrachea, Liliana del Carmen
dc.contributor.author
Moskalets, Michael
dc.date.available
2015-10-01T19:10:27Z
dc.date.issued
2013-10-22
dc.identifier.citation
Rizzo, Bruno; Arrachea, Liliana del Carmen; Moskalets, Michael; Transport phenomena in helical edge state interferometers: A Green's function approach; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 88; 15; 22-10-2013; 155433-155443
dc.identifier.issn
0163-1829
dc.identifier.uri
http://hdl.handle.net/11336/2275
dc.description.abstract
We analyze the current and the shot noise of an electron interferometer made of the helical edge states of a two-dimensional topological insulator within the framework of nonequilibrium Green´s functions formalism. We study, in detail, setups with a single and with two quantum point contacts inducing scattering between the different edge states. We consider processes preserving the spin as well as the effect of spin-flip scattering. In the case of a single quantum point contact, a simple test based on the shot-noise measurement is proposed to quantify the strength of the spin-flip scattering. In the case of two single point contacts with the additional ingredient of gate voltages applied within a finite-size region at the top and bottom edges of the sample, we identify two types of interference processes in the behavior of the currents and the noise. One such process is analogous to that taking place in a Fabry-Pérot interferometer, while the second one corresponds to a configuration similar to a Mach-Zehnder interferometer. In the helical interferometer, these two processes compete.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Transport
dc.subject
Helical
dc.subject
Non-Equilibrium
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Green
dc.subject.classification
Física de los Materiales Condensados
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Transport phenomena in helical edge state interferometers: A Green's function approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
88
dc.journal.number
15
dc.journal.pagination
155433-155443
dc.journal.pais
Estados Unidos
dc.journal.ciudad
College Park
dc.description.fil
Fil: Rizzo, Bruno. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
dc.description.fil
Fil: Arrachea, Liliana del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
dc.description.fil
Fil: Moskalets, Michael. Kharkiv Polytechnic Institute; Uganda
dc.journal.title
Physical Review B: Condensed Matter and Materials Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevB.88.155433
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1307.0726
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.155433
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