Acoustoelectric study of localized states in the quantized Hall effect

Esslinger, A.; Wixforth, Achim; Winkler, R.; Kotthaus, J. P.; Nickel, H.; Schlapp, W.; Lösch, R.

doi:10.1016/0038-1098(92)90797-d

Cited by 45 publications

(39 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, very interesting experimental studies of these effects in the quantum Hall regime were carried out in the works 1,4 . The second class of studies deals with the so-called acoustoelectric effect, namely a drag of 2D electrons by a traveling SAW [5][6][7][8][9] . This effect is due to a transfer of momentum from the SAW to the electrons due to SAWelectron interaction.…”

Section: Introductionmentioning

confidence: 99%

Giant oscillations of the acoustoelectric current in a quantum channel

Totland

Galperin

1997

Phys. Scr.

View full text Add to dashboard Cite

A theory of d.c. electric current induced in a quantum channel by a propagating surface acoustic wave (acoustoelectric current) is worked out. The first observation of the acoustoelectric current in such a situation was reported by J. M. Shilton et al., Journ. Phys. C (to be published). The authors observed a very specific behavior of the acoustoelectric current in a quasi-one-dimensional channel defined in a GaAs-AlGaAs heterostructure by a split-gate depletion -giant oscillations as a function of the gate voltage. Such a behavior was qualitatively explained by an interplay between the energy-momentum conservation law for the electrons in the upper transverse mode with a finite temperature splitting of the Fermi level. In the present paper, a more detailed theory is developed, and important limiting cases are considered.

show abstract

Section: Introductionmentioning

confidence: 99%

Giant oscillations of the acoustoelectric current in a quantum channel

Totland

Galperin

1997

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…A second example is found in the attenuation of surface acoustic waves by the 2DEG. 17 The double-peak structure is also present in the acoustoelectric effect, 18 which is a SAW-induced DC voltage resulting from nonlinear interaction effects.…”

mentioning

confidence: 99%

Observation of the screening signature in the lateral photovoltage of electrons in the quantum Hall regime

et al. 2001

View full text Add to dashboard Cite

The lateral photovoltage generated in the plane of a two-dimensional electron system (2DES) by a focused light spot, exhibits a fine-structure in the quantum oscillations in a magnetic field near the Quantum Hall conductivity minima. A double peak structure occurs near the minima of the longitudinal conductivity oscillations. This is the characteristic signature of the interplay between screening and Landau quantization.

show abstract

“…Proceeding further, we should notice that the amplification coefficient is proportional to the number of channels between the limits ε A and ε B defined by eqn (11). When the nth channel with transverse quantization energy ε 0 n lies within the ε interval, given by eqn (14), just above ε B we will have at most one channel inside the band limited by ε A and ε B .…”

Section: Amplification Ratementioning

confidence: 93%

“…Another method is to study the acoustoelectric effect, which is due to the acoustic-wave induced electrondrag [10][11][12]. Shilton et al [13], for instance, observed experimentally an acoustoelectric current through a quasi-one-dimensional quantum channel defined in a GaAs-AlGaAs heterostructure by a split-gate depletion technique.…”

Section: Introductionmentioning

confidence: 99%