Antilocalization of Coulomb Blockade in a Ge-Si Nanowire

TY - JOUR

T1 - Antilocalization of Coulomb Blockade in a Ge-Si Nanowire

AU - Higginbotham, Andrew P.

AU - Kuemmeth, Ferdinand

AU - Larsen, Thorvald Wadum

AU - Fitzpatrick, M.

AU - Yao, Jianlong

AU - Yan, H.

AU - M. Lieber, C.

AU - Marcus, Charles M.

N1 - preprint available at http://arxiv.org/abs/1401.2948

PY - 2014/5/29

Y1 - 2014/5/29

N2 - The distribution of Coulomb blockade peak heights as a function of magnetic field is investigated experimentally in a Ge-Si nanowire quantum dot. Strong spin-orbit coupling in this hole-gas system leads to antilocalization of Coulomb blockade peaks, consistent with theory. In particular, the peak height distribution has its maximum away from zero at zero magnetic field, with an average that decreases with increasing field. Magnetoconductance in the open-wire regime places a bound on the spin-orbit length ($l_{so}$

AB - The distribution of Coulomb blockade peak heights as a function of magnetic field is investigated experimentally in a Ge-Si nanowire quantum dot. Strong spin-orbit coupling in this hole-gas system leads to antilocalization of Coulomb blockade peaks, consistent with theory. In particular, the peak height distribution has its maximum away from zero at zero magnetic field, with an average that decreases with increasing field. Magnetoconductance in the open-wire regime places a bound on the spin-orbit length ($l_{so}$

KW - cond-mat.mes-hall

M3 - Journal article

SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

M1 - 216806

ER -