Voltage tunable acoustoelectric interaction in GaAs/AlGaAs heterojunctions

Rocke, C.; Manus, S.
November 1994
Applied Physics Letters;11/7/1994, Vol. 65 Issue 19, p2422
Academic Journal
Investigates the interaction between surface acoustic waves and high mobility quasi-two-dimensional electron systems (2DES) in GaAs/AlGaAs heterojunctions with variable carrier density. Method of controlling the strength of the acoustoelectric interactions; Importance of proposed technique for the investigation of 2DES with low sheet carrier densities.


Related Articles

  • Current distribution effects in magnetoresistive tunnel junctions. van de Veerdonk, R.J.M.; Nowak, J. // Applied Physics Letters;11/10/1997, Vol. 71 Issue 19, p2839 

    Analyzes the influence of inhomogeneous current density on the magnetoresistance of tunnel junctions. Application of a finite element approach; Comparison between the four-probe resistance and the actual electrode resistance; Decrease in the apparent resistance change.

  • Temporal characteristics of surface-acoustic-wave-driven luminescence from a lateral p-n junction. Gell, J. R.; Ward, M. B.; Shields, A. J.; Atkinson, P.; Bremner, S. P.; Anderson, D.; Kataoka, M.; Barnes, C. H. W.; Jones, G. A. C.; Ritchie, D. A. // Applied Physics Letters;7/2/2007, Vol. 91 Issue 1, p013506 

    Short radio frequency pulses were used to study the surface-acoustic-wave-driven light emission from a molecular beam epitaxy regrown GaAs/AlGaAs lateral p-n junction. The luminescence provides a fast probe of the signals arriving at the junction allowing the authors to temporally separate the...

  • Phase variation of focused surface acoustic wave. Jen, C. K.; Cielo, P.; Bussiere, J.; Nadeau, F.; Farnell, G. W. // Applied Physics Letters;2/1/1985, Vol. 46 Issue 3, p241 

    Converging and diverging surface acoustic waves (SAW) have been generated and detected using a noncontacting method. A yttrium aluminum garnet laser together with an axicon lens produces a focused optical ring which excites both converging and diverging SAW on the test sample. An optical...

  • Spatially resolved photoluminescence in GaAs surface acoustic wave structures. Santos, P. V.; Ramsteiner, M.; Jungnickel, F. // Applied Physics Letters;4/27/1998, Vol. 72 Issue 17 

    The interaction between a surface acoustic wave (SAW) and the excitonic photoluminescence (PL) in GaAs SAW structures is investigated. The dependence of the PL on the SAW amplitude and illumination intensity is explained by a simple model based on the field-induced ionization of the excitons and...

  • Giant surface acoustic waves generated by a multiple beam laser: Application to the detection of.... Chenu, C.; Noroy, M.-H. // Applied Physics Letters;8/29/1994, Vol. 65 Issue 9, p1091 

    Details the generation of giant surface acoustic wave pulses by implementing an array thermoelastic sources on the surface of a solid. Introduction of the delays between the laser emission time; Detection of mechanical displacements; Presentation of examples of noncontact and nondestructive...

  • Point contact ultrasonic transducer of waveguiding structure for high-frequency operation. Yamada, Ken; Khuri-Yakub, Butrus T. // Applied Physics Letters;3/4/1996, Vol. 68 Issue 10, p1335 

    Presents Hertzian-contact transducer for high frequency operation. Employment of waveguiding tube in transducer; Fabrication of transducers with fused quartz tubes; Use of transducers for surface acoustic wave excitation.

  • Theoretical analysis of horizontal shear mode piezoelectric surface acoustic waves in potassium.... Nakamura, Kiyoshi; Oshiki, Mitsuhiro // Applied Physics Letters;12/1/1997, Vol. 71 Issue 22, p3203 

    Presents a theoretical analysis of horizontal shear (SH) mode piezoelectric surface acoustic waves (SAW) in potassium niobate. Existence of a SH mode SAW; Decomposition of the particle displacement of the SH mode SAW; Range of the electromechanical coupling factor K[sup 2].

  • Acoustic resonance of the atmosphere at 3.7 mHz. Tahira, Makoto // Journal of the Atmospheric Sciences;8/1/95, Vol. 52 Issue 15, p2670 

    Discusses the vertical propagation of plane acoustic-gravity waves with horizontal wave fronts using a layer model with realistic temperature structure based on the Cospar International Reference Atmosphere, 1986. Occurrence of acoustic resonance in normal mode; Cause of modal resonance in waves.

  • Complete acoustic stop bands for cubic arrays of spherical liquid balloons. Kushwaha, M. S.; Djafari-Rouhani, B. // Journal of Applied Physics;9/15/1996, Vol. 80 Issue 6, p3191 

    Presents information on a study which investigated the acoustic band structures for cubic arrays of spherical water balloons surrounded by a mercury host. Secular equation used to investigate the band structures for longitudinal acoustic waves; Methodology of the study; Results and discussion.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics