Shot noise and higher current moments in dimensions 2, 3 & 4
| dc.creator | Travenec, I. | |
| dc.date | 2004-06-22 | |
| dc.date.accessioned | 2026-07-07T02:58:46Z | |
| dc.date.available | 2026-07-07T02:58:46Z | |
| dc.description | Shot noise and higher current moments T_M=<Tr (t^+t)^M> are studied within the Anderson model of disordered conductors in dimensions d= 2, 3 and 4. Here t denotes a transmission matrix. We calculate the conductance G=T_1, shot noise S=T_1-T_2, Fano factor F=S/G and ratios C_M=T_M/G, and we show indications that all of them are as good order parameters as the conductance itself. In the limit of infinite system size, two limiting values of F and C_M are found; the stable one in the metallic regime, and the unstable one, characterizing the critical point for d > 2. We present analytical expressions for both limiting values, together with a compact formula for current cumulants at 3D criticality. Our data confirm also Nazarov's microscopic theory [PRB 52, 4720 (1995)], as we show numerically for special linear combinations of T_M. | |
| dc.description | 12 pages, 14 (7 x 2) figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0406512 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0406512 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/24238 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Shot noise and higher current moments in dimensions 2, 3 & 4 | |
| dc.type | text |