scholarly journals The influence of confined acoustic phonon on the quantum Peltier effect in doped semiconductor superlattice in the presence of electromagnetic wave

2021 ◽  
Vol 1932 (1) ◽  
pp. 012009
Author(s):  
Le Thai Hung ◽  
Nguyen Thi Lam Quynh ◽  
Nguyen Thi Nguyet Anh ◽  
Nguyen Quang Bau
2005 ◽  
Vol 98 (1) ◽  
pp. 20-24 ◽  
Author(s):  
D. V. Zav’yalov ◽  
S. V. Kryuchkov ◽  
N. E. Meshcheryakova

2014 ◽  
Vol 24 (3S1) ◽  
pp. 45-50
Author(s):  
Nguyen Quang Bau ◽  
Bui Dinh Hoi ◽  
Tran Cong Phong

The Hall effect is studied theoretically in a doped semiconductor superlattice (DSSL) subjected to a crossed dc electric field and magnetic field in the presence of an intense electromagnetic wave (EMW). By using the quantum kinetic equation for electrons interacting with acoustic phonons at low temperature, we obtain expressions for the magnetoresistance as well as the Hall coefficient in dependence on the external fields and characteristic parameters of the DSSL. Analytical results are numerically evaluated for the GaAs:Si/GaAs:Be DSSL. The dependence of the magnetoresistance on the magnetic field is consistent with the result obtained for some two-dimensional electron systems. The Hall coefficient depends weakly on the magnetic field and its value in the presence of the EMW is smaller than that of the case without EMW.


2016 ◽  
Vol 30 (04) ◽  
pp. 1650004 ◽  
Author(s):  
Bui Dinh Hoi ◽  
Nguyen Quang Bau ◽  
Nguyen Dinh Nam

The magnetoresistivity (MR) is theoretically calculated in a compositional semiconductor superlattice (CSSL), subjected to a crossed DC electric field and magnetic field, in the presence of an intense electromagnetic wave (EMW). The magnetic field is oriented along the growth direction of the CSSL and the electron–acoustic phonon interaction is taken into account at low temperature. Numerical results for the GaN/AlGaN CSSL show the Shubnikov–de Haas (SdH) oscillations in the MR whose period does not depend on the temperature and amplitude decreases with increasing temperature. The temperature dependence of the relative amplitude of these oscillations is in good agreement with other theories and experiments in some two-dimensional (2D) electron systems. The influence of the EMW as well as superlattice structure on the MR is discussed and compared with available theoretical and experimental results.


2005 ◽  
Vol 70 (3) ◽  
pp. 292-298 ◽  
Author(s):  
K. N Alekseev ◽  
P Pietiläinen ◽  
J Isohätälä ◽  
A. A Zharov ◽  
F. V Kusmartsev

Author(s):  
Dao Thu Hang ◽  
Nguyen Thi Hoa ◽  
Nguyen Thi Thanh Nhan ◽  
Nguyen Quang Bau

Ettingshausen coefficient (EC) in the compositional semiconductor superlattice under the influence of electromagnetic wave (EMW) is surveyed by using the quantum kinetic equation for electrons.  The analytical expressions of the Ettingshausen coefficient are numerically calculated for the GaAs/AlGaAs compositional semiconductor superlattice. It have been showed that the appearance of EMW has changed the EC’s value and the EC decreases nonlinearly when the temperature increases. Studying the dependence of EC on the magnetic field, we discovered that the resonance peaks have appeared and the superlattice period strongly affects the Ettingshausen coefficient.  


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