Large-amplitude oscillation dynamics and domain suppression in a superlattice Bloch oscillator
| dc.creator | Kroemer, Herbert | |
| dc.date | 2000-09-20 | |
| dc.date.accessioned | 2026-07-07T02:38:47Z | |
| dc.date.available | 2026-07-07T02:38:47Z | |
| dc.description | We analyze the current dynamics of a superlattice Bloch oscillator under conditions where, in addition to the dc bias field causing a negative differential ac conductivity, a similarly strong ac field is present, at a frequency somewhat below the Bloch frequency associated with the dc field. The differential conductivity at the ac drive frequency is then negative, but, because of the strong non-linearities of the system, the dc differential conductivity is modified by the ac field. For a sufficiently strong ac field, there will be a dc bias range inside which the dc differential conductivity has turned positive, while the ac conductivity remains negative. The phenomenon should lend itself to the suppression of the domain-like space charge instabilities that are normally associated with a negative dc differential conductivity. | |
| dc.description | 21 pages, 6 figures, pdf format | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0009311 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0009311 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/16805 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Large-amplitude oscillation dynamics and domain suppression in a superlattice Bloch oscillator | |
| dc.type | text |