2D大U Hubbard模型核自旋驰豫研究

Nuclear Spin Relaxation Rates for 2D Large-U Hubbard Model

本文从Spinon与2D格点上Cu^(++)离子的自旋耦合作用出发,讨论CuO_2平面的2DHubbard模形的自旋格点驰豫率1/T_1。理论计算的结果与氧化物高温超导材料的1/T_1实验结果比较,说明可以用S波超流理论解释实验现象。

We propose a hyperfine interaction between copper's nuclei and spinon to account for the Nuclear Spin Relaxation 1/T_1,in the copper-oxygen plane.Based on the framework of Zou-Anderson's effective Hamiltonian,1/T_1 of Cu is calculated and a possible explanation to the experimental results is presented.