Spectra of Rashba- and Dresselhaus-type circular photogalvanic effect at inter-band excitation in GaAs/AlGaAs quantum wells and their behaviors under external strain

2012 ◽  
Vol 100 (15) ◽  
pp. 152110 ◽  
Author(s):  
J. L. Yu ◽  
Y. H. Chen ◽  
Y. Liu ◽  
C. Y. Jiang ◽  
H. Ma ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Photogalvanic Effect ◽  
External Strain

scholarly journals Enhanced circular photogalvanic effect in HgTe quantum wells in the heavily inverted regime

2017 ◽  
Vol 95 (3) ◽  
Author(s):  
Jun Li ◽  
Wen Yang ◽  
Jiang-Tao Liu ◽  
Wei Huang ◽  
Cheng Li ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Photogalvanic Effect

Circular Photogalvanic Effect in SiGe Semiconductor Quantum Wells

2001 ◽  
Vol 690 ◽  
Author(s):  
Sergey D. Ganichev ◽  
Franz-Peter Kalz ◽  
Ulrich Rössler ◽  
Wilhelm Prettl ◽  
Eugenius L. Ivchenko ◽  
...  
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Infrared Radiation ◽  
Spin Splitting ◽  
Inversion Symmetry ◽  
Directed Motion ◽  
Spin Orientation ◽  
Photogalvanic Effect ◽  
Free Carriers ◽  
Semiconductor Quantum Wells

ABSTRACTThe photogalvanic effects, which require a system lacking inversion symmetry, become possible in SiGe based quantum well (QW) structures due to their built-in asymmetry. We report on observations of the circular and linear photogalvanic effects induced by infrared radiation in (001)-and (113)-orientedp–Si/Si1–xGex QW structures and analyse these observations in view of the possible symmetry of these structures. The circular photogalvanic effect arises due to optical spin orientation of free carriers in QWs with band splitting in k-space which results in a directed motion of free carriers in the plane of the QW. We discuss possible mechanisms that give rise to spin-splitting of the electronic subband states for different symmetries.

scholarly journals Resonant inversion of the circular photogalvanic effect inn-doped quantum wells

2003 ◽  
Vol 68 (3) ◽  
Author(s):  
S. D. Ganichev ◽  
V. V. Bel’kov ◽  
Petra Schneider ◽  
E. L. Ivchenko ◽  
S. A. Tarasenko ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Photogalvanic Effect
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