Direct observation of relaxation dynamics of spin-polarized electrons excited at a higher-energy spin-split subband in a diluted magnetic semiconductor quantum well

2007 ◽  
Vol 90 (26) ◽  
pp. 262111 ◽  
Author(s):  
K. Saito ◽  
J. H. Park ◽  
I. Souma ◽  
Y. Oka ◽  
A. Murayama
Keyword(s):  
Quantum Well ◽  
Direct Observation ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Relaxation Dynamics ◽  
Polarized Electrons ◽  
Spin Polarized ◽  
Semiconductor Quantum Well ◽  
Diluted Magnetic

Cathodoluminescence study of diluted magnetic semiconductor quantum well/micromagnet hybrid structures

2001 ◽  
Vol 79 (12) ◽  
pp. 1789-1791 ◽  
Author(s):  
J. Kossut ◽  
I. Yamakawa ◽  
A. Nakamura ◽  
G. Cywiński ◽  
K. Fronc ◽  
...  
Keyword(s):  
Quantum Well ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Hybrid Structures ◽  
Semiconductor Quantum Well ◽  
Diluted Magnetic ◽  
Cathodoluminescence Study

Magnetic imprinting of submicron ferromagnetic wires on a diluted magnetic semiconductor quantum well

2004 ◽  
Vol 84 (15) ◽  
pp. 2826-2828 ◽  
Author(s):  
H. Schömig ◽  
A. Forchel ◽  
S. Halm ◽  
G. Bacher ◽  
J. Puls ◽  
...  
Keyword(s):  
Quantum Well ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Semiconductor Quantum Well ◽  
Diluted Magnetic

ELECTRICAL INJECTION AND OPTICAL READOUT OF SPIN STATES IN A SINGLE QUANTUM DOT

2009 ◽  
Vol 23 (12n13) ◽  
pp. 2826-2835
Author(s):  
T. KÜMMELL ◽  
M. GHALI ◽  
J. HUANG ◽  
R. ARIANS ◽  
G. BACHER ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Diluted Magnetic Semiconductor ◽  
Spin Injection ◽  
Magnetic Semiconductor ◽  
Polarization Degree ◽  
Polarized Electrons ◽  
Optical Readout ◽  
Spin Polarized ◽  
Single Quantum Dot ◽  
Diluted Magnetic

We demonstrate electrically driven spin injection into a single semiconductor quantum dot. Spin polarized electrons are transferred from a diluted magnetic semiconductor ( ZnMnSe ) into InAs quantum dots embedded into GaAs barriers. The spin information can be extracted directly from the polarization degree of the electroluminescence signal stemming from an individual quantum dot. By slightly modifying the device design, we demonstrate a concept to electrically charge the quantum dot by a spin polarized electron and present a simple way to probe this spin state optically.

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