论文标题
Spin-1/2各向异性围绕晶格中的电子液态
Electron liquid state in the spin-1/2 anisotropic Kondo lattice
论文作者
论文摘要
在平均场方法的框架中，我们提供了Spin-1/2各向异性近代晶格的分析和数值解，以在半填充时进行任意尺寸。田间振幅的非平凡溶液在电子液体的费米子光谱中打开了一个间隙，其中实现了晶格位点上的局部力矩。绝缘子状态的基态由局部矩的静态Z_2场确定，该局部矩的静态Z_2场，该场形成了带有双电池的晶格，传导电子在该磁场中移动。由于电子状态之间的杂交，在近代晶格中形成了大型费米表面。根据具有不同尺寸的简单晶格的交换积分的幅度，计算出准粒子光谱中的差距。所提出的方法对于用较弱的交换相互作用各向异性描述了围绕晶格，这使得可以研究自旋1/2昆多晶格与各向同性交换相互作用的行为。
In the framework of the mean field approach, we provide analytical and numerical solution of the spin-1/2 anisotropic Kondo lattice for arbitrary dimension at half filling. Nontrivial solution for the amplitude of the field opens a gap in the fermion spectrum of an electron liquid in which local moments on the lattice sites are realized. The ground state in the insulator state is determined by a static Z_2 field of local moments, which forms the lattice with a double cell, conduction electrons move in this field. Due to hybridization between electron states a large Fermi surface is formed in the Kondo lattice. A gap in the quasi-particle spectrum is calculated depending on the magnitudes of exchange integrals for the simple lattices with different dimension. The proposed approach is also valid for describing the Kondo lattice with weak anisotropy of the exchange interaction, which makes it possible to study the behavior of the spin-1/2 Kondo lattice with an isotropic exchange interaction.
