Role of Interchain Hopping in the Magnetic Susceptibility of Quasi-One-Dimensional Electron Systems
| dc.creator | Fuseya, Yuki | |
| dc.creator | Tsuchiizu, Masahisa | |
| dc.creator | Suzumura, Yoshikazu | |
| dc.creator | Bourbonnais, Claude | |
| dc.date | 2006-06-30 | |
| dc.date | 2007-01-23 | |
| dc.date.accessioned | 2026-07-07T07:42:14Z | |
| dc.date.available | 2026-07-07T07:42:14Z | |
| dc.description | The role of interchain hopping in quasi-one-dimensional (Q-1D) electron systems is investigated by extending the Kadanoff-Wilson renormalization group of one-dimensional (1D) systems to Q-1D systems. This scheme is applied to the extended Hubbard model to calculate the temperature ($T$) dependence of the magnetic susceptibility, $χ(T)$. The calculation is performed by taking into account not only the logarithmic Cooper and Peierls channels, but also the non-logarithmic Landau and finite momentum Cooper channels, which give relevant contributions to the uniform response at finite temperatures. It is shown that the interchain hopping, $t_\perp$, reduces $χ(T)$ at low temperatures, while it enhances $χ(T)$ at high temperatures. This notable $t_\perp$ dependence is ascribed to the fact that $t_\perp$ enhances the antiferromagnetic spin fluctuation at low temperatures, while it suppresses the 1D fluctuation at high temperatures. The result is at variance with the random-phase-approximation approach, which predicts an enhancement of $χ(T)$ by $t_\perp$ over the whole temperature range. The influence of both the long-range repulsion and the nesting deviations on $χ(T)$ is further investigated. We discuss the present results in connection with the data of $χ(T)$ in the (TMTTF)$_2X$ and (TMTSF)$_2X$ series of Q-1D organic conductors, and propose a theoretical prediction for the effect of pressure on magnetic susceptibility. | |
| dc.description | 17 pages, 19figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0606795 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0606795 | |
| dc.identifier | Journal of the Physical Society of Japan Vol. 76 No. 1, January, 2007, 014709 (17 pages) | |
| dc.identifier | doi:10.1143/JPSJ.76.014709 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/122370 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Role of Interchain Hopping in the Magnetic Susceptibility of Quasi-One-Dimensional Electron Systems | |
| dc.type | text |