TY - GEN
T1 - Probing spin states in quantum dots by spin-resolved one-dimensional contacts
AU - Hitachi, K.
AU - Yamamoto, M.
AU - Tarucha, S.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - We fabricate a quantum dot (QD) with tunnel-coupled quantum wires (QWs) to study the electronic states of the QD with the QWs as spin filters. The propagating modes of the QWs are adjusted with gate voltages to be either spin-resolved (n=1) or spin degenerate (n=2) under finite magnetic fields. Only for the n=1 QWs, we observe large and small Coulomb peaks alternating with magnetic field in the filling factor regime of ν=2 to 4, which is assigned to singlet-triplet transitions induced by correlation effects.
AB - We fabricate a quantum dot (QD) with tunnel-coupled quantum wires (QWs) to study the electronic states of the QD with the QWs as spin filters. The propagating modes of the QWs are adjusted with gate voltages to be either spin-resolved (n=1) or spin degenerate (n=2) under finite magnetic fields. Only for the n=1 QWs, we observe large and small Coulomb peaks alternating with magnetic field in the filling factor regime of ν=2 to 4, which is assigned to singlet-triplet transitions induced by correlation effects.
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U2 - 10.1063/1.2355215
DO - 10.1063/1.2355215
M3 - Conference contribution
AN - SCOPUS:33947535495
SN - 0735403473
SN - 9780735403475
T3 - AIP Conference Proceedings
SP - 1367
EP - 1368
BT - LOW TEMPERATURE PHYSICS
T2 - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Y2 - 10 August 2006 through 17 October 2006
ER -