Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields

Details Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields

2007-11-09

arxiv.org/abs/0711.1547v1

Phys. Rev. Lett. 100, 036805 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.100.036805

Using dc excitation to spatially tilt Landau levels, we study resonant acoustic phonon scattering in two-dimensional electron systems. We observe that dc electric field strongly modifies phonon resonances, transforming resistance maxima into minima and back into maxima. Further, phonon resonances are enhanced dramatically in the non-linear dc response and can be detected even at low temperatures. Most of our observations can be explained in terms of dc-induced (de)tuning of the resonant acoustic phonon scattering and its interplay with intra-Landau level impurity scattering. Finally, we observe a dc-induced zero-differential resistance state and a resistance maximum which occurs when the electron drift velocity approaches the speed of sound.

Affiliated with

Also associated with

No associations

Rating

Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-27441