Phase coherence in the inelastic cotunneling regime

Sigrist, Martin and Ihn, Thomas and Ensslin, Klaus and Loss, Daniel and Reinwald, Matthias and Wegscheider, Werner (2006) Phase coherence in the inelastic cotunneling regime. PHYSICAL REVIEW LETTERS, 96 (3): 036804. ISSN 0031-9007, 1079-7114

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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.

Item Type: Article
Uncontrolled Keywords: QUANTUM-DOT; LOCAL OXIDATION; NANOSTRUCTURES; INTERFERENCE; TRANSPORT;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Depositing User: Dr. Gernot Deinzer
Date Deposited: 24 Feb 2021 11:15
Last Modified: 24 Feb 2021 11:15
URI: https://pred.uni-regensburg.de/id/eprint/35029

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