Spin-Orbit Coupling, Antilocalization, and Parallel Magnetic Fields in Quantum Dots
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Spin-Orbit Coupling, Antilocalization, and Parallel Magnetic Fields in Quantum Dots. / Zumbuhl, D.; Miller, Jessica; M. Marcus, C.; Campman, K.; gossard, A.
I: Physical Review Letters, Bind 89, Nr. 27, 22.08.2002, s. 276803.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Spin-Orbit Coupling, Antilocalization, and Parallel Magnetic Fields in Quantum Dots
AU - Zumbuhl, D.
AU - Miller, Jessica
AU - M. Marcus, C.
AU - Campman, K.
AU - gossard, A.
PY - 2002/8/22
Y1 - 2002/8/22
N2 - We investigate antilocalization due to spin-orbit coupling in ballistic GaAs quantum dots. Antilocalization that is prominent in large dots is suppressed in small dots, as anticipated theoretically. Parallel magnetic fields suppress both antilocalization and also, at larger fields, weak localization, consistent with random matrix theory results once orbital coupling of the parallel field is included. In situ control of spin-orbit coupling in dots is demonstrated as a gate-controlled crossover from weak localization to antilocalization.
AB - We investigate antilocalization due to spin-orbit coupling in ballistic GaAs quantum dots. Antilocalization that is prominent in large dots is suppressed in small dots, as anticipated theoretically. Parallel magnetic fields suppress both antilocalization and also, at larger fields, weak localization, consistent with random matrix theory results once orbital coupling of the parallel field is included. In situ control of spin-orbit coupling in dots is demonstrated as a gate-controlled crossover from weak localization to antilocalization.
KW - cond-mat.mes-hall
KW - cond-mat.mtrl-sci
U2 - 10.1103/PhysRevLett.89.276803
DO - 10.1103/PhysRevLett.89.276803
M3 - Journal article
C2 - 12513231
VL - 89
SP - 276803
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 27
ER -
ID: 38327416