Effect of elastic scattering on miniband transport in semiconductor superlattices

1993 ◽  
Vol 48 (12) ◽  
pp. 9178-9181 ◽  
Author(s):  
Rolf R. Gerhardts
Keyword(s):  
Elastic Scattering ◽  
Semiconductor Superlattices ◽  
Miniband Transport

scholarly journals TERAHERTZ BLOCH OSCILLATOR WITH SUPPRESSED ELECTRIC DOMAINS: EFFECT OF ELASTIC SCATTERING

2009 ◽  
Vol 23 (20n21) ◽  
pp. 4459-4472 ◽  
Author(s):  
TIMO HYART ◽  
KIRILL N. ALEKSEEV ◽  
AHTI LEPPÄNEN ◽  
ERKKI V. THUNEBERG
Keyword(s):  
Elastic Scattering ◽  
Space Charge ◽  
Relaxation Times ◽  
Electron Velocity ◽  
Thz Radiation ◽  
Charge Accumulation ◽  
Operational Conditions ◽  
Miniband Transport ◽  
Kinetics Of ◽  
Transport Approach

We theoretically consider the amplification of THz radiation in a superlattice Bloch oscillator. The main dilemma in the realization of THz Bloch oscillator is finding operational conditions which allow simultaneously to achieve gain at THz frequencies and to avoid destructive space-charge instabilities. A possible solution to this dilemma is the extended Limited Space-Charge Accumulation scheme of Kroemer (H. Kroemer, cond-mat/0009311). Within the semiclassical miniband transport approach we extend its range of applicability by considering a difference in the relaxation times for electron velocity and electron energy. The kinetics of electrons and fields establishing a stationary signal in the oscillator is also discussed.

Miniband transport and oscillations in semiconductor superlattices

2004 ◽  
Vol 15 (4) ◽  
pp. S229-S233 ◽  
Author(s):  
Álvaro Perales ◽  
Luis L Bonilla ◽  
Ramón Escobedo
Keyword(s):  
Semiconductor Superlattices ◽  
Miniband Transport

Observation of magnetophonon resonance in the miniband transport in semiconductor superlattices

1992 ◽  
Vol 45 (20) ◽  
pp. 12148-12151 ◽  
Author(s):  
H. Noguchi ◽  
H. Sakaki ◽  
T. Takamasu ◽  
N. Miura
Keyword(s):  
Semiconductor Superlattices ◽  
Magnetophonon Resonance ◽  
Miniband Transport
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