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One-dimensional Kondo lattice model studied through numerical diagonalization
Condensed Matter Theory, Department of Theoretical Physics, AlbaNova University Center, KTH.
2008 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 77, no 7, 073103Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2008. Vol. 77, no 7, 073103
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:umu:diva-107768DOI: 10.1103/PhysRevB.77.073103ISI: 000253764200003OAI: oai:DiVA.org:umu-107768DiVA: diva2:851490
Available from: 2015-09-05 Created: 2015-08-28 Last updated: 2017-12-04Bibliographically approved

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Lundow, Per-Håkan
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