TY - JOUR
T1 - Coherent spin dynamics and spin polarized transport in doped semiconductors
AU - Awschalom, D. D.
AU - Samarth, N.
N1 - Funding Information:
We acknowledge support from the ARO DAAG55-98-1-0366, NSF DMR-9701072 and -9701484, and ONR N00014-99-1-0077 and -0071, and DARPA through the ONR N00014-99-1-1096.
PY - 2000
Y1 - 2000
N2 - We provide an overview of measurements that elucidate the effects of interactions, quantum confinement, reduced dimensionality, and interfacial geometries on coherent electronic spin dynamics and spin transport in doped semiconductors. The experiments focus on a variety of doped semiconductor systems, ranging from bulk n-GaAs crystals to modulation doped II-VI magnetic semiconductor quantum wells. In particular, the latter provide model systems in which electron gases are strongly exchange-coupled to an engineered distribution of magnetic moments, hence allowing one to systematically tailor spin interactions between confined electronic states, magnetic ions, and nuclei. Two complementary techniques including state-of-the-art spin dynamical probes having high temporal (∼100 fs) and spatial (∼100 nm) resolution, and low-temperature magneto-transport, are used to survey a variety of physical phenomena in these systems.
AB - We provide an overview of measurements that elucidate the effects of interactions, quantum confinement, reduced dimensionality, and interfacial geometries on coherent electronic spin dynamics and spin transport in doped semiconductors. The experiments focus on a variety of doped semiconductor systems, ranging from bulk n-GaAs crystals to modulation doped II-VI magnetic semiconductor quantum wells. In particular, the latter provide model systems in which electron gases are strongly exchange-coupled to an engineered distribution of magnetic moments, hence allowing one to systematically tailor spin interactions between confined electronic states, magnetic ions, and nuclei. Two complementary techniques including state-of-the-art spin dynamical probes having high temporal (∼100 fs) and spatial (∼100 nm) resolution, and low-temperature magneto-transport, are used to survey a variety of physical phenomena in these systems.
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M3 - Article
AN - SCOPUS:0033899407
SN - 1557-1939
VL - 13
SP - 201
EP - 208
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
IS - 2
ER -