...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review, B. Condensed matter and materials physics >Doped carrier formulation of the t-J model: Projection constraint and the effective Kondo-Heisenberg lattice representation
【24h】

Doped carrier formulation of the t-J model: Projection constraint and the effective Kondo-Heisenberg lattice representation

机译：

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

We show that the recently proposed doped carrier Hamiltonian formulation of the t-J model should be complemented with the constraint that projects out the unphysical states. With this important ingredient, the previously used and seemingly different spin-fermion representations of the t-J model are shown to be gauge related to each other. This constraint can be treated in a controlled way close to half-filling, suggesting that the doped carrier representation provides an appropriate theoretical framework to address the t-J model in this region. This constraint also suggests that the t-J model can be mapped onto a Kondo-Heisenberg lattice model. Such a mapping highlights important physical similarities between the quasi-two-dimensional heavy fermions and the high-T_c superconductors. Finally, we discuss the physical implications of our model representation relating, in particular, the small versus large Fermi surface crossover to the closure of the lattice spin gap.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号