Memory function approach to the Hall constant in strongly correlated electron systems: Part II
| dc.creator | Lange, Ekkehard | |
| dc.date | 1996-11-07 | |
| dc.date.accessioned | 2026-07-07T09:11:16Z | |
| dc.date.available | 2026-07-07T09:11:16Z | |
| dc.description | The anomalous frequency and doping dependence of the Hall constant in the normal state of high-T_c superconductors are investigated within models of strongly correlated electron systems. In Mori theory, the transition of the Hall constant from infinite to zero frequency is described by a memory function. It naturally introduces a second time scale, that, within the t-J model, is identified with the spinon relaxation time of Anderson. This provides us with a phenomenological understanding of the interplay between the frequency and temperature dependence of the Hall constant for frequencies below the Mott-Hubbard gap. Within the single-band Hubbard model in the limit $U\gg t$, the memory function is calculated via its moments and shown to project out the high-energy scale U. This causes the Hall constant to decrease by a factor $(1+δ)/2$ ($δ$: doping), when the frequency is lowered from infinity to values within the Mott-Hubbard gap. Finally, it is outlined, how the Hall constant may be calculated in the low frequency regime. | |
| dc.description | 10 PRB pages, to appear in PRB together with cond-mat/9606176 | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9611050 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9611050 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/151618 | |
| dc.subject | Superconductivity | |
| dc.title | Memory function approach to the Hall constant in strongly correlated electron systems: Part II | |
| dc.type | text |