Impurity Potential Broadening of the Landau Level as Measured by an Acoustoelectronic Method
RUSSIAN ACADEMY OF SCIENCES SAINT PETERSBURG IOFFE PHYSICAL-TECHNICAL INST
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In the quantum Hall regime the conductivitvy sigmasub xx measured in a direct current experiment is equal to 0, whereas the alternative current conductivity Q has a finite value. It has been shown that from the study of this a.c. conductivity one could obtain valuable characteristics of 2DEG and estimate the role of random fluctuation potential. As it has been demonstrated earlier one of the best methods for the study of Q in semiconducting heterostructures is that of acoustoelectronic interaction of surface acoustic waves with 2DEG in a structure.
- Solid State Physics
- Line, Surface and Bulk Acoustic Wave Devices
- Electricity and Magnetism