Coherent spin dynamics of excitons in quantum wells

1997 ◽  
Vol 56 (16) ◽  
pp. 10412-10422 ◽  
Author(s):  
M. Dyakonov ◽  
X. Marie ◽  
T. Amand ◽  
P. Le Jeune ◽  
D. Robart ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Spin Dynamics ◽  
Coherent Spin

COHERENT SPIN DYNAMICS OF ELECTRONS IN II-VI SEMICONDUCTOR QUANTUM WELLS

2007 ◽  
Vol 21 (08n09) ◽  
pp. 1336-1346 ◽  
Author(s):  
D. R. YAKOVLEV ◽  
E. A. ZHUKOV ◽  
M. BAYER ◽  
G. KARCZEWSKI ◽  
T. WOJTOWICZ ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Spin Dynamics ◽  
Relaxation Times ◽  
Optical Excitation ◽  
Binding Energies ◽  
Zero Magnetic Field ◽  
Excitation Density ◽  
Kerr Rotation ◽  
Spin Dephasing ◽  
Coherent Spin

Coherent spin dynamics of electrons and holes is studied experimentally in CdTe/Cd 0.78 Mg 0.22 Te quantum wells with a two-dimensional electron gas of low density. A picosecond pump-probe Kerr rotation and time-resolved polarized photoluminescence detected by a streak camera are used as experimental techniques. Strong Coulomb interaction between electrons and holes, which results in large binding energies of neutral and negatively charged excitons (trions), allows selective addressing of exciton and trion states with resonant optical excitation. Spin dephasing time of electrons up to 30 ns is achieved at a low temperature of 1.9 K and in a zero magnetic field limit. It decreases for higher lattice temperatures and with increase of excitation density. Spin relaxation times for exciton of 65 ps and trion of 25 ps have been measured under quasi-resonant excitation of excitons.

scholarly journals Coherent spin dynamics of an interwell excitonic gas inGaAs∕AlGaAscoupled quantum wells

2006 ◽  
Vol 73 (23) ◽  
Author(s):  
A. V. Larionov ◽  
V. E. Bisti ◽  
M. Bayer ◽  
J. Hvam ◽  
K. Soerensen
Keyword(s):  
Quantum Wells ◽  
Spin Dynamics ◽  
Coherent Spin

Coherent spin transport by acoustic fields in GaAs quantum wells

2006 ◽  
Vol 3 (12) ◽  
pp. 4307-4312 ◽  
Author(s):  
O. D. D. Couto ◽  
F. Iikawa ◽  
J. A. H. Stotz ◽  
R. Hey ◽  
P. V. Santos
Keyword(s):  
Quantum Wells ◽  
Spin Transport ◽  
Acoustic Fields ◽  
Coherent Spin

Exciton spin dynamics in quantum wells

1993 ◽  
Vol 47 (23) ◽  
pp. 15776-15788 ◽  
Author(s):  
M. Z. Maialle ◽  
E. A. de Andrada e Silva ◽  
L. J. Sham
Keyword(s):  
Quantum Wells ◽  
Spin Dynamics

Coherent Spin Dynamics in Molecular Cr8Zn Wheels

2015 ◽  
Vol 6 (24) ◽  
pp. 5062-5066 ◽  
Author(s):  
Alberto Ghirri ◽  
Alessandro Chiesa ◽  
Stefano Carretta ◽  
Filippo Troiani ◽  
Johan van Tol ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Coherent Spin
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