Magnetic field dependence of Pauli spin blockade: A window into the sources of spin relaxation in silicon

TY - JOUR

T1 - Magnetic field dependence of Pauli spin blockade

T2 - A window into the sources of spin relaxation in silicon

AU - Yamahata, G.

AU - Kodera, T.

AU - Churchill, H.O.H.

AU - Uchida, K.

AU - Marcus, Charles M.

AU - Oda, S.

PY - 2012/9/13

Y1 - 2012/9/13

N2 - We investigate spin relaxation in a silicon double quantum dot via leakage current through Pauli blockade as a function of interdot detuning and magnetic field. A dip in leakage current as a function of magnetic field on an ∼40 mT field scale is attributed to spin-orbit mediated spin relaxation. On a larger (∼400 mT) field scale, a peak in leakage current is seen in some, but not all, Pauli-blocked transitions, and is attributed to spin-flip cotunneling. Both dip and peak structure show good agreement between theory and experiment.

AB - We investigate spin relaxation in a silicon double quantum dot via leakage current through Pauli blockade as a function of interdot detuning and magnetic field. A dip in leakage current as a function of magnetic field on an ∼40 mT field scale is attributed to spin-orbit mediated spin relaxation. On a larger (∼400 mT) field scale, a peak in leakage current is seen in some, but not all, Pauli-blocked transitions, and is attributed to spin-flip cotunneling. Both dip and peak structure show good agreement between theory and experiment.

U2 - 10.1103/PhysRevB.86.115322

DO - 10.1103/PhysRevB.86.115322

M3 - Journal article

SN - 2469-9950

VL - 86

SP - 115322

JO - Physical Review B

JF - Physical Review B

IS - 11

ER -