Vanishing spin gap in a competing spin-liquid phase in the kagome Heisenberg antiferromagnet (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Vanishing spin gap in a competing spin-liquid phase in the kagome Heisenberg antiferromagnet (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevB.89.020407 (literal)

Alternative label

• Iqbal, Yasir; Poilblanc, Didier; Becca, Federico (2014)
  Vanishing spin gap in a competing spin-liquid phase in the kagome Heisenberg antiferromagnet
  in Physical review. B, Condensed matter and materials physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Iqbal, Yasir; Poilblanc, Didier; Becca, Federico (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 89 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 5 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 2 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Abdus Salam International Centre for Theoretical Physics; Centre National de la Recherche Scientifique (CNRS); PRES Universite de Toulouse; Consiglio Nazionale delle Ricerche (CNR); International School for Advanced Studies (literal)

Titolo

• Vanishing spin gap in a competing spin-liquid phase in the kagome Heisenberg antiferromagnet (literal)

Abstract

• We provide strong numerical evidence, using improved variational wave functions, for a ground state with vanishing spin gap in the spin-1/2 quantum Heisenberg model on the kagome lattice. Starting from the algebraic U(1) Dirac spin liquid state proposed by Ran et al. [Phys. Rev. Lett. 98, 117205 (2007)] and iteratively applying a few Lanczos steps, we compute the lowest S = 2 excitation constructed by exciting spinons close to the Dirac nodes. Our results are compatible with a vanishing spin gap in the thermodynamic limit and in consonance with a power-law decay of long distance spin-spin correlations in real space. The competition with a gapped (topological) spin liquid is discussed. (literal)

Prodotto di

• MD.P06.024.001 Fluidi quantistici e sistemi elettronici fortemente correlati alla nanoscala e in dispositivi (MD.P06.024.002) (Modulo)

Autore CNR

• FEDERICO BECCA (Unità di personale interno)

Incoming links:

Autore CNR di

• FEDERICO BECCA (Unità di personale interno)

Prodotto

• MD.P06.024.001 Fluidi quantistici e sistemi elettronici fortemente correlati alla nanoscala e in dispositivi (MD.P06.024.002) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)