Resonant magnetopolaron effects in parabolic quantum wells in a tilted magnetic field

1994 ◽  
Vol 94 (1-2) ◽  
pp. 49-56 ◽  
Author(s):  
R. Haupt ◽  
L. Wendler
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Parabolic Quantum Wells ◽  
Tilted Magnetic Field

scholarly journals Quantum Hall Ferromagnetic-Paramagnetic Transition in p-Si/SiGe/Si Quantum Wells in a Tilted Magnetic Field

2012 ◽  
Vol 400 (4) ◽  
pp. 042005 ◽  
Author(s):  
I L Drichko ◽  
I Yu Smirnov ◽  
A V Suslov ◽  
O A Mironov ◽  
D R Leadley
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Quantum Hall ◽  
Tilted Magnetic Field

OBSERVATIONS OF PARALLEL FIELD INDUCED REENTRANT QUANTUM HALL EFFECTS IN WIDE GaAs QUANTUM WELLS

2009 ◽  
Vol 23 (12n13) ◽  
pp. 2808-2812
Author(s):  
D. R. LUHMAN ◽  
W. PAN ◽  
T. M. LU ◽  
D. C. TSUI ◽  
L. N. PFEIFFER ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Field Experiments ◽  
Quantum Hall ◽  
Particle Energy ◽  
Level Crossing ◽  
Quantum Hall States ◽  
Parallel Field ◽  
Hall Effects ◽  
Tilted Magnetic Field

We report the results of tilted magnetic field experiments on three high quality wide GaAs quantum wells, with particular emphasis on the N ≥ 1 Landau levels. With an increasing component of in-plane magnetic field, B∥, we observe reentrant behavior for the odd filling factor quantum Hall states. This reentrance is not explained within a single-particle energy level crossing scheme and may be related to the collapse of interlayer tunneling.

Electrically induced luminescence in parabolic quantum wells in a magnetic field

2000 ◽  
Vol 42 (9) ◽  
pp. 1734-1737
Author(s):  
É. P. Sinyavskii ◽  
S. M. Sokovnich
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Parabolic Quantum Wells

scholarly journals Some Experimental Prospects involving Parabolic Quantum Wells

2000 ◽  
Vol 53 (1) ◽  
pp. 119 ◽  
Author(s):  
John F. Dobson ◽  
Jun Wang ◽  
Hung M. Le
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Van Der Waals ◽  
Far Infrared ◽  
Narrow Resonance ◽  
First Approximation ◽  
Spring Balance ◽  
Electron Layer ◽  
Parabolic Confinement ◽  
Parabolic Quantum Wells

We discuss two possible lines of experimental investigation based on parabolic quantum wells. In the first proposal, we note that the Generalised Kohn Theorem/Harmonic Potential Theorem forbids electron–electron damping of the Kohn mode in an electron layer gas under strictly parabolic confinement. This applies even for very strong driving. It is therefore interesting to attempt reduction of other sources of broadening in GaAlAs parabolic wells, so as to achieve a prominent narrow resonance in the far infrared. We concentrate here on phononic bandgap structures, which may be of interest for reduction of phonon effects in other systems as well. The second class of proposed experiment involves twinned parabolic wells in an attempt to observe van der Waals forces directly in GaAlAs systems. In a first approximation, the parabolic or Hooke's-law nature of the confinement allows one to use the well as a kind of spring balance to measure the weak van der Waals force. The influence of an applied magnetic field on these forces appears to be significant, and this system might provide the first measurement of such an effect.

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