Bond-located phases driven by exchange interaction in the one-dimensional t-U-V-J model

作者：Ding Hanqin^*; Wang Yanshen

来源：Physics Letters, Section A: General, Atomic and Solid State Physics , 2011, 375(16): 1751-1755.

DOI：10.1016/j.physleta.2011.02.025

• Bosonization
• Renormalization group
• t-U-V-J model
• Phase diagram

The one-dimensional half-filled extended Hubbard model with on-site repulsion (U) and nearest-neighbor interactions including Coulomb repulsion (V) and exchange (J) is studied in the weak-coupling regime. We present a theoretical argument for the occurrence of bond-located phases. The bond-charge-density-wave (BCDW) is realized for J > 0 and bond-spin-density-wave (BSDW) occurs for J < 0.

• 出版日期2011-4-18
• 单位西安交通大学