...
首页> 外文期刊>Physical review >Luttinger liquid coupled to quantum spins: Flow equation approach to the Kondo necklace model
【24h】

Luttinger liquid coupled to quantum spins: Flow equation approach to the Kondo necklace model

机译:Luttinger液体与量子自旋耦合:Kondo项链模型的流量方程方法

获取原文
获取原文并翻译 | 示例
           

摘要

We study a lattice realization of a Luttinger liquid interacting with quantum spins in terms of an antiferro-magnetic 5=1/2 Heisenberg chain, where each spin is also coupled to a σ= 1/2 Kondo spin degree of freedom. This model describes the low-energy spin dynamics in quasi-one-dimensional materials, where the electronic spins of the magnetic ions interact with those of impurities, nuclei, and possibly other spin species present in their environment. For large ferromagnetic and antiferromagnetic Kondo interaction J', there are two phases corresponding to an effective spin-1 Heisenberg chain and a dimerized spin-1/2 ladder, respectively. For weak Kondo interaction, we establish that the Kondo interaction drives the system to a strong coupling regime. This suggests that J'=0 is the only critical point in the system.
机译:我们根据反铁磁5 = 1/2海森堡链研究了与量子自旋相互作用的Luttinger液体的晶格实现,其中每个自旋还耦合到σ= 1/2 Kondo自旋自由度。该模型描述了准一维材料中的低能自旋动力学,其中磁性离子的电子自旋与杂质,原子核以及环境中存在的其他自旋物种的电子自旋相互作用。对于较大的铁磁和反铁磁近藤相互作用J',存在两个相,分别对应于有效的spin-1海森堡链和二聚的spin-1 / 2阶梯。对于弱的Kondo交互作用,我们确定Kondo交互作用将系统驱动到强耦合状态。这表明J'= 0是系统中唯一的临界点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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