Iterative path-integral summations for the tunneling magnetoresistance in interacting quantum-dot spin valves
arXiv:1903.11426 · doi:10.1103/PhysRevB.99.195457
Abstract
We report on the importance of resonant-tunneling processes on quantum transport through interacting quantum-dot spin valves. To include Coulomb interaction in the calculation of the tunneling magnetoresistance (TMR), we reformulate and generalize the recently-developed, numerically-exact method of iterative summation of path integrals (ISPI) to account for spin-dependent tunneling. The ISPI scheme allows us to investigate weak to intermediate Coulomb interaction in a wide range of gate and bias voltage and down to temperatures at which a perturbative treatment of tunneling severely fails.
13 pages, 11 Figs, published version
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