SPIN DYNAMICS IN III-V/II-VI: Mn HETEROVALENT QUANTUM WELLS

2009 ◽  
Vol 23 (12n13) ◽  
pp. 2739-2749
Author(s):  
A. A. TOROPOV ◽  
YA. V. TERENT'EV ◽  
A. V. LEBEDEV ◽  
P. S. KOP'EV ◽  
S. V. IVANOV ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Heavy Hole ◽  
Diluted Magnetic Semiconductor ◽  
Spin Dynamics ◽  
Magnetic Semiconductor ◽  
Equation Model ◽  
Double Quantum ◽  
3 Dimensional ◽  
Spin Flip ◽  
Diluted Magnetic

We report on the spectroscopic magnetooptical studies of spin dynamics in diluted magnetic semiconductor (DMS) GaAs / AlGaAs / ZnSe / ZnCdMnSe heterovalent double quantum wells (QW). The transients of circularly polarized photoluminescence in an external magnetic field are detected in the structures with different widths of the GaAs QW. The analysis of the data, performed within the rate-equation model, has allowed separate estimations of the spin relaxation rate of localized electrons and holes. The spin flip of the electrons confined in the DMS ZnCdMnSe QW is faster than 20 ps, whereas the spin flip of the heavy hole localized in the GaAs QW is as long as ~9 ns. The long spin flip of the holes is presumably governed by their strong 3-dimensional localization.

Spin-Conserving Tunneling of Excitons in Diluted Magnetic Semiconductor Double Quantum Wells

2008 ◽  
Vol 47 (5) ◽  
pp. 3533-3536 ◽  
Author(s):  
Jiho Park ◽  
Akihiro Murayama ◽  
Izuru Souma ◽  
Yasuo Oka ◽  
Daniel Dangnelund ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Double Quantum ◽  
Diluted Magnetic

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

Time-resolved spin dynamics in diluted magnetic semiconductor quantum wells

1990 ◽  
Vol 68 (9) ◽  
pp. 726-727 ◽  
Author(s):  
M. R. Freeman ◽  
D. D. Awschalom
Keyword(s):  
Quantum Wells ◽  
Spin Polarization ◽  
Diluted Magnetic Semiconductor ◽  
Spin Dynamics ◽  
Magnetic Semiconductor ◽  
Laser Pulses ◽  
Initial Energy ◽  
Ultrashort Laser Pulses ◽  
Time Resolved ◽  
Diluted Magnetic

Ultrashort laser pulses were used to prepare charge-carrier populations of known initial energy and spin polarization in two-dimensional quantum wells of the diluted magnetic semiconductor Cd1−xMnxTe. The evolutions of the carrier spin polarization and of magnetization transferred to the magnetic ions were observed using time-resolved optical techniques.

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