Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › Рецензирование
Anisotropic spin dephasing in a (110)-grown high-mobility GaAs/AlGaAs quantum well measured by resonant spin amplification technique. / Griesbeck, Michael; Glazov, Mikhail; Sherman, Eugene; Korn, Tobias; Schuh, Dieter; Wegscheider, Werner; Schüller, Christian.
Spintronics IV. Том 8100 2011. 810015.Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › Рецензирование
}
TY - GEN
T1 - Anisotropic spin dephasing in a (110)-grown high-mobility GaAs/AlGaAs quantum well measured by resonant spin amplification technique
AU - Griesbeck, Michael
AU - Glazov, Mikhail
AU - Sherman, Eugene
AU - Korn, Tobias
AU - Schuh, Dieter
AU - Wegscheider, Werner
AU - Schüller, Christian
PY - 2011/10/11
Y1 - 2011/10/11
N2 - Spin dynamics in zincblende two-dimensional electron systems is usually dominated by the Dyakonov-Perel spin dephasing mechanism resulting from the underlying spin-orbit fields. An exceptional situation is realized in symmetrically grown and doped GaAs/AlGaAs quantum wells grown along the [110] direction, where the Rashba contribution is negligible and the effective Dresselhaus spin-orbit field is perpendicular to the sample plane. In such a system the spin dephasing times for in- and out-of-plane crystallographic directions are expected to be strongly different and the out-of-plane spin dephasing time is significantly enhanced as compared with conventional systems. We observe the spin relaxation anisotropy by resonant spin amplification measurements in a 30 nm wide double-sided symmetrically δ-doped single quantum well with a very high mobility of about 3·106 cm 2/Vs at 1.5K. A comparison of the measured resonant spin amplification traces with the developed theory taking into account the spin dephasing anisotropy yields the dephasing times whose anisotropy and magnitudes are in-line with the theoretical expectations.
AB - Spin dynamics in zincblende two-dimensional electron systems is usually dominated by the Dyakonov-Perel spin dephasing mechanism resulting from the underlying spin-orbit fields. An exceptional situation is realized in symmetrically grown and doped GaAs/AlGaAs quantum wells grown along the [110] direction, where the Rashba contribution is negligible and the effective Dresselhaus spin-orbit field is perpendicular to the sample plane. In such a system the spin dephasing times for in- and out-of-plane crystallographic directions are expected to be strongly different and the out-of-plane spin dephasing time is significantly enhanced as compared with conventional systems. We observe the spin relaxation anisotropy by resonant spin amplification measurements in a 30 nm wide double-sided symmetrically δ-doped single quantum well with a very high mobility of about 3·106 cm 2/Vs at 1.5K. A comparison of the measured resonant spin amplification traces with the developed theory taking into account the spin dephasing anisotropy yields the dephasing times whose anisotropy and magnitudes are in-line with the theoretical expectations.
KW - Resonant spin amplification
KW - Spin dynamics
KW - Spin-orbit interaction
KW - Time-resolved Kerr rotation
UR - http://www.scopus.com/inward/record.url?scp=80053470643&partnerID=8YFLogxK
U2 - 10.1117/12.893539
DO - 10.1117/12.893539
M3 - Conference contribution
AN - SCOPUS:80053470643
SN - 9780819487100
VL - 8100
BT - Spintronics IV
T2 - Spintronics IV
Y2 - 21 August 2011 through 24 August 2011
ER -
ID: 36442660