2008/06/10 by Balázs Dóra, M. Gulácsi, Miklós Gulácsi · 14 citations
Engineering · Physics and Astronomy · #Atomic physics #Condensed matter physics #Coupling (piping) #Dephasing #Electron #Inelastic scattering #Magnetic field #Materials science #Mesoscopic physics #Molecular Junctions and Nanostructures #Phonon #Physics #Quantum and electron transport phenomena #Quantum mechanics #Scattering #Scattering rate #Semiconductor materials and devices #Superconductivity #Thermal conduction #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.78.165111
published in Physical Review B 78(16) (American Physical Society) · 5 pages, 3 figures
arxiv created 2008/06/10 · openalex publication_date 2008/10/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study a nonuniversal contribution to the dephasing rate of conduction electrons due to local vibrational modes. The inelastic-scattering rate is strongly influenced by multiphonon excitations, exhibiting oscillatory behavior. For higher frequencies, it saturates to a finite, coupling dependent value. In the strong-coupling limit, the phonon is almost completely softened and the inelastic cross section reaches its maximal value. This represents a magnetic-field insensitive contribution to the dephasing time in mesoscopic systems, in addition to magnetic impurities.