Reflectance-based optically detected resonance studies of neutral and negatively charged donors inGaAs/AlxGa1−xAsquantum wells

2000 ◽  
Vol 61 (8) ◽  
pp. 5556-5561 ◽  
Author(s):  
G. Kioseoglou ◽  
H. D. Cheong ◽  
T. Yeo ◽  
H. A. Nickel ◽  
A. Petrou ◽  
...  
Keyword(s):  
Optically Detected ◽  
Optically Detected Resonance

Pulsed optically detected resonance in semiconductors

1978 ◽  
Vol 21 (11-12) ◽  
pp. 1451-1454 ◽  
Author(s):  
P. Dawson ◽  
B.C. Cavenett ◽  
G. Sowersby
Keyword(s):  
Optically Detected ◽  
Optically Detected Resonance

Full-spectrum optically detected resonance (ODR) spectroscopy of GaAs/AlGaAs quantum wells

1998 ◽  
Vol 2 (1-4) ◽  
pp. 39-43 ◽  
Author(s):  
G.S Herold ◽  
H.A Nickel ◽  
J.G Tischler ◽  
B.A Weinstein ◽  
B.D McCombe
Keyword(s):  
Quantum Wells ◽  
Full Spectrum ◽  
Optically Detected ◽  
Optically Detected Resonance

Intra-magnetoexciton transitions in semiconductor quantum wells

2001 ◽  
Vol 692 ◽  
Author(s):  
Z. Barticevic ◽  
M. Pacheco ◽  
C. A. Duque ◽  
L. E. Oliveira
Keyword(s):  
Quantum Wells ◽  
Energy Levels ◽  
Far Infrared ◽  
Theoretical Work ◽  
Growth Direction ◽  
Oscillator Strengths ◽  
Transition Energies ◽  
Semiconductor Quantum Wells ◽  
Optically Detected ◽  
Optically Detected Resonance

AbstractHighly sensitive optically detected resonance experiments have shown that magnetoexcitons in GaAs-(Ga,Al)As semiconductor quantum wells have discrete internal energy levels, with transition energies found in the far-infrared (terahertz) region. Here we are concerned with a theoretical study of the terahertz transitions of light-hole and heavy-hole confined magnetoexcitons in GaAs-(Ga,Al)As quantum wells, under a magnetic field applied in the growth direction of the semiconductor heterostructure. The various magnetoexciton states are obtained in the effective-mass approximation by expanding the corresponding exciton-envelope wave functions in terms of appropriate Gaussian functions. The electron and hole cyclotron resonances and intra-magnetoexciton transitions are theoretically studied by exciting the allowed electron, hole and internal magnetoexcitonic transitions with far-infrared radiation. Theoretical results are obtained for both the intra-magnetoexciton transition energies and oscillator strengths associated with excitations from 1s - like to 2s, 2p±, and 3p±- like magnetoexciton states, and from 2p- to 2s – like exciton states. Present results are in overall agreement with available optically detected resonance measurements and clarifies a number of queries in previous theoretical work.

Optically detected resonance spectroscopy of interface fluctuation quantum dots

2005 ◽  
Vol 26 (1-4) ◽  
pp. 158-162 ◽  
Author(s):  
C.J. Meining ◽  
V.R. Whiteside ◽  
A. Petrou ◽  
B.D. McCombe ◽  
A.B. Dzyubenko ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Resonance Spectroscopy ◽  
Optically Detected ◽  
Optically Detected Resonance ◽  
Interface Fluctuation
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