Coherent spin dynamics of electrons and holes in semiconductor quantum wells and quantum dots under periodical optical excitation: Resonant spin amplification versus spin mode locking

2012 ◽  
Vol 85 (12) ◽  
Author(s):  
I. A. Yugova ◽  
M. M. Glazov ◽  
D. R. Yakovlev ◽  
A. A. Sokolova ◽  
M. Bayer
Keyword(s):  
Quantum Dots ◽  
Quantum Wells ◽  
Spin Dynamics ◽  
Optical Excitation ◽  
Mode Locking ◽  
Spin Mode ◽  
Semiconductor Quantum Wells ◽  
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 Hole spin mode locking and coherent dynamics in a largely inhomogeneous ensemble ofp-doped InAs quantum dots

2012 ◽  
Vol 86 (16) ◽  
Author(s):  
F. Fras ◽  
B. Eble ◽  
B. Siarry ◽  
F. Bernardot ◽  
A. Miard ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Mode Locking ◽  
Inas Quantum Dots ◽  
Spin Mode ◽  
Coherent Dynamics

Ultrafast spin dynamics in diluted magnetic semiconductor quantum wells

1998 ◽  
Vol 184-185 ◽  
pp. 931-935 ◽  
Author(s):  
R. Akimoto ◽  
K. Ando ◽  
F. Sasaki ◽  
S. Kobayashi ◽  
T. Tani
Keyword(s):  
Quantum Wells ◽  
Diluted Magnetic Semiconductor ◽  
Spin Dynamics ◽  
Magnetic Semiconductor ◽  
Semiconductor Quantum Wells ◽  
Diluted Magnetic

scholarly journals Interplay of spin mode locking and nuclei-induced frequency focusing in quantum dots

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
Philipp Schering ◽  
Philipp W. Scherer ◽  
Götz S. Uhrig
Keyword(s):  
Quantum Dots ◽  
Mode Locking ◽  
Spin Mode
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