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Effect of electron interaction on statistics of conductance oscillations in open quantum dots: Does the dephasing time saturate?
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för teknik och naturvetenskap.ORCID-id: 0000-0002-9863-2502
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för teknik och naturvetenskap.
2007 (engelsk)Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 99, nr 16Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We perform self-consistent quantum transport calculations in open quantum dots taking into account the effect of electron interaction. We demonstrate that, in the regime of the ultralow temperatures 2pkBT? (? being the mean-level spacing), the electron interaction strongly smears the conductance oscillations and thus significantly affects their statistics. Our calculations are in good quantitative agreement with the observed ultralow temperature statistics of Huibers et al.. Our findings question a conventional interpretation of the ultralow temperature saturation of the coherence time in open dots which is based on the noninteracting theories, where the agreement with the experiment is achieved by introducing additional phenomenological channels of dephasing. © 2007 The American Physical Society.

sted, utgiver, år, opplag, sider
2007. Vol. 99, nr 16
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-47922DOI: 10.1103/PhysRevLett.99.166801OAI: oai:DiVA.org:liu-47922DiVA, id: diva2:268818
Tilgjengelig fra: 2009-10-11 Laget: 2009-10-11 Sist oppdatert: 2017-12-13

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