Dimerization in a half-filled one-dimensional extended hubbard model |
| |
Authors: | Zhang Y Z |
| |
Institution: | Max-Planck-Institut für Physik komplexer Systeme, N?thnitzer Strasse 38, 01187 Dresden, Germany. |
| |
Abstract: | We use a density-matrix renormalization group method to study quantitatively the phase diagram of a one-dimensional extended Hubbard model at half filling by investigating the correlation functions and structure factors. We confirmed the existence of a novel narrow region with long-range bond-order-wave order that was highly controversial recently between the charge-density-wave phase and Mott insulator phase. We determined accurately the position of the bicritical point U(b) approximately 7.2t, V(b) approximately 3.746t, which is quite different from previous studies. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|