Electric field induced suppression of universal conductance fluctuations and dephasing in disordered systems
| dc.creator | Ghosh, Arindam | |
| dc.creator | Raychaudhuri, A. K. | |
| dc.date | 1999-11-29 | |
| dc.date.accessioned | 2026-07-07T03:15:20Z | |
| dc.date.available | 2026-07-07T03:15:20Z | |
| dc.description | We report a novel phenomenon that the universal conductance fluctuations (UCF) can be suppressed by a small electric field E. The experiment has been carried out on single crystals of Si doped heavily with P and B beyond the critical composition of insulator to metal transition. The phenomenon is identified as a consequence of electric field induced dephasing of the electron wavefunction. Over the range of measurements, the observed dephasing rate (τ_ϕ^{-1}) varied as τ_ϕ^{-1} = aT + bE^q with q \approx 1.3 and for E >> E^*, a cross-over field, τ_ϕ^{-1} \sim E^q, independent of T. This experiment also establishes that the UCF can be utilized as a sensitive electron "interferometer" to measure dephasing rate. | |
| dc.description | 4 pages, 3 eps figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9911464 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9911464 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/29992 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Electric field induced suppression of universal conductance fluctuations and dephasing in disordered systems | |
| dc.type | text |