期刊
PHYSICAL REVIEW B
卷 65, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.65.214406
关键词
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资金
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [01/00719-8] Funding Source: FAPESP
We study the one-dimensional Kondo lattice model through the density-matrix renormalization group. Our results for the spin-correlation function indicate the presence of a small Fermi surface in large portions of the phase diagram, in contrast to some previous studies that used the same technique. We argue that the discrepancy is due to the open boundary conditions, which introduce strong charge perturbations that strongly affect the spin Friedel oscillations.
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