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Portrait of Carina Fasth

Carina Fasth

Associate Professor

Portrait of Carina Fasth

Probing Confined Phonon Modes by Transport through a Nanowire Double Quantum Dot

Author

  • Carsten Weber
  • Andreas Fuhrer
  • Carina Fasth
  • Greta Lindwall
  • Lars Samuelson
  • Andreas Wacker

Summary, in English

Strong radial confinement in semiconductor nanowires leads to modified electronic and phononic energy spectra. We analyze the current response to the interplay between quantum confinement effects of the electron and phonon systems in a gate-defined double quantum dot in a semiconductor nanowire. We show that current spectroscopy of inelastic transitions between the two quantum dots can be used as an experimental probe of the confined phonon environment. The resulting discrete peak structure in the measurements is explained by theoretical modeling of the confined phonon mode spectrum, where the piezoelectric coupling is of crucial importance.

Department/s

  • Mathematical Physics
  • Solid State Physics
  • NanoLund: Center for Nanoscience

Publishing year

2010

Language

English

Pages

1-036801

Publication/Series

Physical Review Letters

Volume

104

Issue

3

Document type

Journal article

Publisher

American Physical Society

Topic

  • Condensed Matter Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1079-7114