2009/09/30 by C. Weber, A. Fuhrer, Andreas Fuhrer +7 · 59 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Condensed matter physics #Coupling (piping) #Electron #Materials science #Nanowire #Nanowire Synthesis and Applications #Optoelectronics #Phonon #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Quantum wire #Semiconductor #Spectroscopy #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.104.036801
published in Physical Review Letters 104(3), 036801 (American Physical Society) · 4 pages, 4 figures; final version
openalex publication_date 2010/01/19 · arxiv created 2010/02/15 · arxiv updated 2010/02/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.