许焱;丁汉芹;

• 1:新疆大学物理科学与技术学院
• 2:新疆大学理论物理中心

摘要(Abstract)：

通过玻色化和重整化群分析方法,我们研究了一维变形t-J_z模型的量子特性.在弱耦合区域和电子半满填充下,我们获得了模型的基态相图,体系表现为自旋-能隙相.电荷-能隙相变线λ_c=(πJ_z/16t)^(1/2)把相图分成二个不同的量子相区:λ<λ_c对应Neel序的绝缘相,λ≥λ_c对应超导序与Neel序共存的金属相.诱导产生的三体吸引作用是产生超导TS(1/2)把相图分成二个不同的量子相区:λ<λ_c对应Neel序的绝缘相,λ≥λ_c对应超导序与Neel序共存的金属相.诱导产生的三体吸引作用是产生超导TS⁰序的物理原因.研究结果揭示一维变形t-J_z模型与t-J_z模型不等价.

关键词(KeyWords)： 一维;变形t-J_z模型;自旋–能隙相;弱耦合;相图

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(11664037;11864039)~~

作者(Authors): 许焱;丁汉芹;

DOI: 10.13568/j.cnki.651094.651316.2020.04.15.0006

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