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One-dimensional Kondo lattice model studied through numerical diagonalization
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Condensed Matter Theory.
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Condensed Matter Theory.ORCID iD: 0000-0002-2076-5911
2008 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 77, no 7Article 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
Keyword [en]
phase-diagram
Identifiers
URN: urn:nbn:se:kth:diva-17358DOI: 10.1103/PhysRevB.77.073103ISI: 000253764200003Scopus ID: 2-s2.0-40949158953OAI: oai:DiVA.org:kth-17358DiVA: diva2:335402
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Rosengren, Anders

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