Probing Confined Phonon Modes by Transport through a Nanowire Double Quantum Dot
Författare
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.
Publiceringsår
2010
Språk
Engelska
Sidor
1-036801
Publikation/Tidskrift/Serie
Physical Review Letters
Volym
104
Issue
3
Fulltext
- Available as PDF - 923 kB
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Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
American Physical Society
Ämne
- Condensed Matter Physics
Status
Published
Forskningsgrupp
- Linne Center for Nanoscience and Quantum Engineering
- Nanometer structure consortium (nmC)
ISBN/ISSN/Övrigt
- ISSN: 1079-7114