Theoretical calculations of shallow acceptor states in GaAs/AlxGa1−xAs quantum wells in the presence of an external magnetic field

1994 ◽  
Vol 50 (4) ◽  
pp. 2393-2398 ◽  
Author(s):  
Q. X. Zhao ◽  
P. O. Holtz ◽  
Alfredo Pasquarello ◽  
B. Monemar ◽  
M. Willander
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quantum Wells ◽  
Theoretical Calculations ◽  
Shallow Acceptor

Interaction of External Acoustic Waves - Confined Electrons - Internal Phonons in a Cylindrical Quantum Wire with an Infinite Potential in the Presence of an External Magnetic Field

2018 ◽  
Vol 783 ◽  
pp. 62-72
Author(s):  
Nguyen Vu Nhan ◽  
Nguyen Van Nghia ◽  
Nguyen Quyet Thang ◽  
Nguyen Quang Bau
Keyword(s):  
Magnetic Field ◽  
Kinetic Equation ◽  
External Magnetic Field ◽  
Quantum Wells ◽  
Strong Magnetic Field ◽  
Acoustic Waves ◽  
Quantum Wire ◽  
Heisenberg Equation ◽  
Quantum Kinetic Equation ◽  
System Temperature

Interaction of external acoustic waves - confined electrons - internal phonons in a cylindrical quantum wire with an infinite potential (CQWIP) has been theoretically studied via the quantum kinetic equation for electrons in the presence of an external magnetic field (EMF). The quantum kinetic equation for the distribution function of electrons interacting with internal and external acoustic phonons is obtained from the Heisenberg equation of motion and the model of CQWIP. The density of acoustomagnetoelectric (AME) current and the analytical expressions for the AME field in the CQWIP in the presence of the EMF are obtained. The theoretical results are numerically evaluated for the specific CQWIP of GaAs/GaAsAl. It is shown that the AME field strongly depends on the system temperature in both cases of the strong magnetic field and the weak magnetic field. However, the graph showing the relationship between the AME field and the system temperature has the peaks in case of the strong magnetic field. The reason may be due to movement of the electrons between the mini-bands. The AME field obtained in this work are then compared with those of bulk semiconductors, superlattices, quantum wells (QW) and rectangular quantum wire (RQW).

scholarly journals THEORETICAL QUESTIONS OF APPLYING SMART MATERIALS FOR MICROACTUATORS / TEORINIAI IŠMANIOJO SKYSČIO TAIKYMO MIKROPAVAROMS KLAUSIMAI

2013 ◽  
Vol 6 (4) ◽  
pp. 541-545
Author(s):  
Andrius Klevinskis ◽  
Vytautas Bučinskas ◽  
Lukas Daujotas
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Materials ◽  
Smart Materials ◽  
Theoretical Calculations ◽  
Magnetorheological Fluid ◽  
Magnetic Liquid ◽  
Operating Modes ◽  
Essential Properties ◽  
Main Operating

The article provides an overview of smart magnetic materials, including the essential properties of smart magnetic liquid materials and discusses the main operating modes of these materials. Theoretical calculations have disclosed changes in the behavior of the magnetorheological fluid determined under the influence of an external magnetic field of the microactuator. Finally, the paper presents the results and conclusions of the conduced experiments. Santrauka Darbe apžvelgtos išmaniosios magnetinės medžiagos, pateiktos pagrindinės išmaniųjų magnetinių skysčių charakteristikos, aptarti pagrindiniai šių medžiagų darbo režimai. Teoriniais skaičiavimais nustatyta mikropavaroje veikiančio magnetoreologinio skysčio savybių kitimo priklausomybė nuo išorinio magnetinio lauko. Darbe pateikti tyrimo metu gautų rezultatų grafikai ir išvados.

scholarly journals Cold and Hot Excitons in CdMnTe/CdMgTe Quantum Wells in Strong Excitation Regime and External Magnetic Field

2009 ◽  
Vol 116 (5) ◽  
pp. 849-851
Author(s):  
A. Trajnerowicz ◽  
A. Golnik ◽  
P. Kossacki ◽  
W. Bardyszewski ◽  
M. Wiater ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quantum Wells ◽  
Strong Excitation

Modulation of Fano resonances by an external magnetic field in semiconductor quantum wells

1996 ◽  
Vol 40 (1-8) ◽  
pp. 85-88 ◽  
Author(s):  
V. Bellani ◽  
E. Pérez ◽  
S. Zimmermann ◽  
L. Viña ◽  
R. Hey ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quantum Wells ◽  
Fano Resonances ◽  
Semiconductor Quantum Wells

scholarly journals Optical properties of single magnetic quantum wells in an external magnetic field

1993 ◽  
Vol 03 (C5) ◽  
pp. 397-400 ◽  
Author(s):  
S. WESTON ◽  
T. STIRNER ◽  
P. HARRISON ◽  
J. E. NICHOLLS ◽  
W. E. HAGSTON ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
External Magnetic Field ◽  
Quantum Wells
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