Open AccessMageto-transport properties of serial double quantum dots in the spin blockade regime
Author(s) -
Zou Cheng-Yi,
Shengbao Wu,
Guoping Zhao
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.017201
Subject(s) - physics , quantum dot , condensed matter physics , hamiltonian (control theory) , quantum tunnelling , coulomb blockade , spin flip , hyperfine structure , spin (aerodynamics) , master equation , spin engineering , quantum master equation , spin polarization , quantum mechanics , quantum , electron , mathematical optimization , mathematics , thermodynamics , transistor , voltage , scattering
With the two-impurity Anderson model Hamiltonian, we theoretically study the magneto-transport properties of the serially coupled double quantum dot system in a spin blockade regime, and solve Hamiltonian by the master equation approach. We find that the spin flip tunneling between dots due to the spin-orbit coupling can lift the quantum dot spin blocking. We also study the effects of the spin flip of quantum dots due to the hyperfine interactions and the spin exchange interaction on magnetic transport properties of the system. Some valuable results are obtained and the relevant problems are discussed.