One-dimensional Kondo lattice model studied through numerical diagonalization

被引:14
作者
Basylko, S. A. [1 ]
Lundow, P. H. [1 ]
Rosengren, A. [1 ,2 ]
机构
[1] KTH, AlbaNova Univ Ctr, Dept Theoret Phys, SE-10691 Stockholm, Sweden
[2] KTH, AlbaNova Univ Ctr, NORDITA, SE-10691 Stockholm, Sweden
关键词
D O I
10.1103/PhysRevB.77.073103
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The one-dimensional Kondo lattice model is studied by means of the numerical diagonalization method. By using massively parallel computations, we were able to study lattices large enough to obtain convergent results for electron densities n <= 2/3. For such densities, an additional ferromagnetic region is found inside the paramagnetic phase. Also, a region is found where the localized spins participate in the low-energy dynamics together with the conduction electrons, thus resulting in a large Fermi surface. These results are an independent confirmation of previous density matrix renormalization group results.
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页数:4
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