Phonon-mediated relaxtion in doped quantum dot molecules

TY - GEN

T1 - Phonon-mediated relaxtion in doped quantum dot molecules

AU - Grodecka-Grad, Anna

AU - Förstner, Jens

N1 - Conference code: 245

PY - 2010/1/1

Y1 - 2010/1/1

N2 - We study a single quantum dot molecule doped with one electron in the presence of electron-phonon coupling. Both diagonal and off-diagonal interactions representing real and virtual processes with acoustic phonons via deformation potential and piezoelectric coupling are taken into account. We employ a non-perturbative quantum kinetic theory and show that the phonon-mediated relaxation is dominated by an electron tunneling on a picosecond time scale. A dependence of the relaxation on the temperature and the strength of the tunneling coupling is analyzed.

AB - We study a single quantum dot molecule doped with one electron in the presence of electron-phonon coupling. Both diagonal and off-diagonal interactions representing real and virtual processes with acoustic phonons via deformation potential and piezoelectric coupling are taken into account. We employ a non-perturbative quantum kinetic theory and show that the phonon-mediated relaxation is dominated by an electron tunneling on a picosecond time scale. A dependence of the relaxation on the temperature and the strength of the tunneling coupling is analyzed.

U2 - 10.1088/1742-6596/245/1/012035

DO - 10.1088/1742-6596/245/1/012035

M3 - Conference article

SN - 1742-6588

VL - 245

SP - 012035

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

T2 - Quantum dots

Y2 - 26 April 2010 through 30 April 2010

ER -