TY - JOUR
T1 - Optical detection of zero-field spin precession of high mobility two-dimensional electron gas in a gated GaAs/AlGaAs quantum well
AU - Takahashi, T.
AU - Matsuzaka, S.
AU - Ohno, Y.
AU - Ohno, H.
N1 - Funding Information:
This work was partly supported by the Grant-in-Aid for Scientific Research (nos. 19048007 and 19048008 in Priority Area Creation and control of spin current) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT).
PY - 2010/9
Y1 - 2010/9
N2 - We investigated the effective magnetic field induced by spinorbit interaction in a gated modulation-doped GaAs/AlGaAs quantum well (QW) structure. We measured the precession of the optically injected electron spins at zero magnetic field by a time-resolved Kerr rotation (TRKR) technique as a function of the gate voltage Vg. The Vg-dependence of the effective magnetic field extracted from the TRKR data was quantitatively analyzed by considering both Rashba and Dresselhaus spinorbit interaction in a Monte Carlo simulation. With the Dresselhaus spinorbit coupling parameter γ and the scattering time as fitting parameters, we reproduced the experimental TRKR data, from which we estimated γ∼13 eV 3.
AB - We investigated the effective magnetic field induced by spinorbit interaction in a gated modulation-doped GaAs/AlGaAs quantum well (QW) structure. We measured the precession of the optically injected electron spins at zero magnetic field by a time-resolved Kerr rotation (TRKR) technique as a function of the gate voltage Vg. The Vg-dependence of the effective magnetic field extracted from the TRKR data was quantitatively analyzed by considering both Rashba and Dresselhaus spinorbit interaction in a Monte Carlo simulation. With the Dresselhaus spinorbit coupling parameter γ and the scattering time as fitting parameters, we reproduced the experimental TRKR data, from which we estimated γ∼13 eV 3.
KW - GaAs
KW - Spinorbit interaction
KW - Spintronics
KW - Time-resolved Kerr rotation
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U2 - 10.1016/j.physe.2010.03.026
DO - 10.1016/j.physe.2010.03.026
M3 - Article
AN - SCOPUS:77958009154
VL - 42
SP - 2698
EP - 2701
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 10
ER -