TY - JOUR
T1 - Magnetic field dependence of Pauli spin blockade
T2 - A window into the sources of spin relaxation in silicon quantum dots
AU - Yamahata, G.
AU - Kodera, T.
AU - Churchill, H. O.H.
AU - Uchida, K.
AU - Marcus, C. 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.
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U2 - 10.1103/PhysRevB.86.115322
DO - 10.1103/PhysRevB.86.115322
M3 - Article
AN - SCOPUS:84866385995
SN - 1098-0121
VL - 86
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 11
M1 - 115322
ER -