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Sigrist, Martin ; Ihn, Thomas ; Ensslin, Klaus ; Loss, Daniel ; Reinwald, Matthias ; Wegscheider, Werner

Phase coherence in the Inelastic Cotunneling Regime

Sigrist, Martin, Ihn, Thomas , Ensslin, Klaus, Loss, Daniel , Reinwald, Matthias and Wegscheider, Werner (2006) Phase coherence in the Inelastic Cotunneling Regime. Physical Review Letters 96, 036804.

Date of publication of this fulltext: 05 Aug 2009 13:32
Article
DOI to cite this document: 10.5283/epub.1794


Abstract

Two quantum dots with tunable mutual tunnel coupling have been embedded in a two-terminal Aharonov-Bohm geometry. Aharonov-Bohm oscillations investigated in the cotunneling regime demonstrate coherent tunneling through nonresonant states. Visibilities of more than 0.8 are measured indicating that phase-coherent processes are involved in the elastic and inelastic cotunneling. An oscillation-phase change of pi is detected as a function of bias voltage at the inelastic cotunneling onset.



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Details

Item typeArticle
Journal or Publication TitlePhysical Review Letters
Publisher:AMER PHYSICAL SOC
Place of Publication:COLLEGE PK
Volume:96
Page Range:036804
DateJanuary 2006
InstitutionsPhysics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Identification Number
ValueType
10.1103/PhysRevLett.96.036804DOI
KeywordsQUANTUM-DOT; LOCAL OXIDATION; NANOSTRUCTURES; INTERFERENCE; TRANSPORT;
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
Item ID1794

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