Charge-Density-Wave Formation in the Doped Two-Leg Extended Hubbard Ladder
| dc.creator | Tsuchiizu, M. | |
| dc.creator | Suzumura, Y. | |
| dc.date | 2003-11-24 | |
| dc.date | 2004-01-04 | |
| dc.date.accessioned | 2026-07-07T02:54:55Z | |
| dc.date.available | 2026-07-07T02:54:55Z | |
| dc.description | We investigate electronic properties of the doped two-leg Hubbard ladder with both the onsite and the nearest-neighbor Coulomb repulsions, by using the the weak-coupling renormalization-group method. It is shown that, for strong nearest-neighbor repulsions, the charge-density-wave state coexisting with the p-density-wave state becomes dominant fluctuation where spins form intrachain singlets. By increasing doping rate, we have also shown that the effects of the nearest-neighbor repulsions are reduced and the system exhibits a quantum phase transition into the d-wave-like (or rung-singlet) superconducting state. We derive the effective fermion theory which describes the critical properties of the transition point with the gapless excitation of magnon. The phase diagram of the two-leg ladder compound, Sr_{14-x}Ca_xCu_{24}O_{41}, is discussed. | |
| dc.description | 4 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0311534 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0311534 | |
| dc.identifier | J. Phys. Soc. Jpn. 73, 804 (2004) | |
| dc.identifier | doi:10.1143/JPSJ.73.804 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22752 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Charge-Density-Wave Formation in the Doped Two-Leg Extended Hubbard Ladder | |
| dc.type | text |