TY - JOUR
T1 - Electric-field dependent g -factor anisotropy in Ge-Si core-shell nanowire quantum dots
AU - Brauns, Matthias
AU - Ridderbos, Joost
AU - Li, Ang
AU - Bakkers, Erik P.A.M.
AU - Zwanenburg, Floris A.
PY - 2016/3/17
Y1 - 2016/3/17
N2 - We present angle-dependent measurements of the effective g factor g in a Ge-Si core-shell nanowire quantum dot. g is found to be maximum when the magnetic field is pointing perpendicularly to both the nanowire and the electric field induced by local gates. Alignment of the magnetic field with the electric field reduces g significantly. g is almost completely quenched when the magnetic field is aligned with the nanowire axis. These findings confirm recent calculations, where the obtained anisotropy is attributed to a Rashba-type spin-orbit interaction induced by heavy-hole light-hole mixing. In principle, this facilitates manipulation of spin-orbit qubits by means of a continuous high-frequency electric field.
AB - We present angle-dependent measurements of the effective g factor g in a Ge-Si core-shell nanowire quantum dot. g is found to be maximum when the magnetic field is pointing perpendicularly to both the nanowire and the electric field induced by local gates. Alignment of the magnetic field with the electric field reduces g significantly. g is almost completely quenched when the magnetic field is aligned with the nanowire axis. These findings confirm recent calculations, where the obtained anisotropy is attributed to a Rashba-type spin-orbit interaction induced by heavy-hole light-hole mixing. In principle, this facilitates manipulation of spin-orbit qubits by means of a continuous high-frequency electric field.
UR - http://resolver.tudelft.nl/uuid:7bca67f3-73cf-4e7c-b0d6-221eeea42ba2
UR - http://www.scopus.com/inward/record.url?scp=84962128777&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.93.121408
DO - 10.1103/PhysRevB.93.121408
M3 - Article
AN - SCOPUS:84962128777
VL - 93
JO - Physical Review B
JF - Physical Review B
SN - 2160-3308
IS - 12
M1 - 121408
ER -