Vasiliadou, E. and Müller, G. and Heitmann, D. and Weiss, Dieter and Klitzing, Klaus von and Nickel, H. and Schlapp, W. and Lösch, R.
Collective Response in the Microwave Photoconductivity of Hall Bar Structures.
Physical Review B 48, pp. 17145-17148.
at publisher (via DOI)
Other URL: http://prola.aps.org/abstract/PRB/v48/i23/p17145_1, http://prb.aps.org/
We have investigated the microwave photoconductivity of 100-ìm- and 50-ìm-wide Hall bars fabricated from GaAs/AlxGa1-xAs heterostructures. We found resonant responses at frequencies fres with fres2(B) =fres2(B=0)+fc2, where fc is the cyclotron frequency of the two-dimensional electron gas in the perpendicularly applied magnetic field B. This shows that the photoresponse is dominated by collective plasmon excitations confined within the width of the Hall structure.
Export bibliographical data