THE CIRCULAR PHOTOGALVANIC EFFECT IN TWO-DIMENSIONAL HOLE GASES IN PERPENDICULAR MAGNETIC FIELD

2009 ◽  
Vol 23 (12n13) ◽  
pp. 2867-2871 ◽  
Author(s):  
D. A. VASYUKOV ◽  
A. S. PLAUT ◽  
A. H. MACDONALD ◽  
M. HENINI

We have measured the circular photogalvanic effect in a GaAs two-dimensional hole gas in zero and perpendicular magnetic field. The increase of the photoinduced voltage in very small magnetic field, when excited at fixed photon energy, demonstrates behavior reminiscent of that seen in anomalous Hall measurements on ferromagnets. The spectral dependence of the photoinduced voltage in magnetic field exhibits a series of maxima and minima that oscillate around zero volts. When plotted, the energy positions of these voltage peaks form a clear Landau-level-like fan chart.

2014 ◽  
Vol 90 (1) ◽  
Author(s):  
Yan Feng ◽  
J. Goree ◽  
Bin Liu ◽  
T. P. Intrator ◽  
M. S. Murillo

1996 ◽  
Vol 8 (39) ◽  
pp. L557-L562 ◽  
Author(s):  
N P R Hill ◽  
J T Nicholls ◽  
E H Linfield ◽  
M Pepper ◽  
D A Ritchie ◽  
...  

Open Physics ◽  
2013 ◽  
Vol 11 (2) ◽  
Author(s):  
Orion Ciftja

AbstractThe classical two-dimensional motion of a parabolically confined charged particle in presence of a perpendicular magnetic is studied. The resulting equations of motion are solved exactly by using a mathematical method which is based on the introduction of complex variables. The two-dimensional motion of a parabolically charged particle in a perpendicular magnetic field is strikingly different from either the two-dimensional cyclotron motion, or the oscillator motion. It is found that the trajectory of a parabolically confined charged particle in a perpendicular magnetic field is closed only for particular values of cyclotron and parabolic confining frequencies that satisfy a given commensurability condition. In these cases, the closed paths of the particle resemble Lissajous figures, though significant differences with them do exist. When such commensurability condition is not satisfied, path of particle is open and motion is no longer periodic. In this case, after a sufficiently long time has elapsed, the open paths of the particle fill a whole annulus, a region lying between two concentric circles of different radii.


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