SPIN GAPLESS BOND-ORDERED PHASE IN THE EXTENDED HUBBARD CHAIN WITH SPIN-DEPENDENT REPULSION

被引：4

作者：

Ding, Hanqin ^{[1
]}

Zhang, Jun ^{[1
]}

机构：

[1] Xinjiang Univ, Sch Phys, Urumqi 830046, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2011年 / 25卷 / 27期

关键词：

Phase diagram; bosonization; renormalization group; Hubbard model; symmetry; correlated-hopping; MODEL; DIAGRAM; TRANSITION; MECHANISM;

D O I：

10.1142/S0217979211101922

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using the field theoretical bosonization and renormalization group techniques, we analytically study quantum phase diagram of a one-dimensional half-filled extended Hubbard model with on-site (U) and spin-dependent nearest-neighbor interactions (V-perpendicular to, V-parallel to) in the weak coupling regime. In the case of easy-plane anisotropy (V-perpendicular to > V-parallel to) and at V-parallel to < U/2, the existence of bond-ordered spin-density-wave phase, corresponding to spin gapless transverse magnetization located on bonds (BSDW+) is shown.

引用

页码：3555 / 3568

页数：14

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