Low temperature electron-phonon resonance in dc-current-biased two-dimensional electron systems
| dc.creator | Lei, X. L. | |
| dc.date | 2008-01-31 | |
| dc.date | 2008-05-13 | |
| dc.date.accessioned | 2026-07-07T09:38:09Z | |
| dc.date.available | 2026-07-07T09:38:09Z | |
| dc.description | Effects of resonant acoustic phonon scattering on magnetoresistivity are examined in two-dimensional electron systems at low temperatures by using a balance-equation magnetotransport scheme direct controlled by the current. The experimentally observed resonances in linear resistivity are shown to result from the conventional bulk phonon modes in a GaAs-based system, without invoking leaky interface phonons. Due to quick heating of electrons, phonon resonances can be dramatically enhanced by a finite bias current. When the electron drift velocity increases to the speed of sound, additional and prominent phonon resonance peaks begin to emerge. As a result, remarkable resistance oscillation and negative differential resistivity can appear in nonlinear transport in a modest mobility sample at low temperatures, which is in agreement with recent experiments. | |
| dc.description | 7 pages, 5 figures, published version | |
| dc.identifier | https://arxiv.org/abs/0801.4836 | |
| dc.identifier | http://arxiv.org/abs/0801.4836 | |
| dc.identifier | Phys. Rev. B 77, 205309 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.77.205309 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/160704 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Low temperature electron-phonon resonance in dc-current-biased two-dimensional electron systems | |
| dc.type | text |