One-Dimensional Kondo Lattice at Half Filling: Charge Properties
| dc.creator | Tsvelik, A. M. | |
| dc.date | 1994-05-09 | |
| dc.date.accessioned | 2026-07-07T03:07:15Z | |
| dc.date.available | 2026-07-07T03:07:15Z | |
| dc.description | The model of Kondo chain with $M$-fold degenerate band of conduction electrons of spin 1/2 at half filling interacting with localized spins $S$ is studied. It is shown that due to the instanton effects the spin sector reveals itself in optical conductivity. Namely, the density of the charge current at large wave vector $k \approx π$ is proportional to the density of topological charge of the staggered magnetization. As a consequence, the optical conductivity at $k = π$ would either have a gap equal to three spin gaps (for $|M - 2S| = $(even) when the spin spectrum is gapful), or show a psedogap $σ(ω, k = π) \sim ω^2$ for $|M - 2S|$ = (odd). | |
| dc.description | 6 pages, LaTex | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9405024 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9405024 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27103 | |
| dc.subject | Condensed Matter | |
| dc.title | One-Dimensional Kondo Lattice at Half Filling: Charge Properties | |
| dc.type | text |