INVESTIGADORES
LAMAS Carlos Alberto
artículos
Título:
EVIDENCE OF A SPIN-LIQUID PHASE IN THE FRUSTRATED HONEYCOMB LATTICE
Autor/es:
D. C. CABRA; C. A. LAMAS; H. D. ROSALES
Revista:
MODERN PHYSICS LETTERS B
Editorial:
WORLD SCIENTIFIC PUBL CO PTE LTD
Referencias:
Lugar: New Jersey; Año: 2011 vol. 25 p. 891 - 900
ISSN:
0217-9849
Resumen:
In the present paper we present some new data supporting the existence of a spin-disordered phase in the Heisenberg model on the honeycomb lattice with antiferromagnetic interactions up to third neighbors along the line J2=J3, predicted in [Phys. Rev. B 83, 094506 (2011)]. We use the Schwinger boson technique followed by a mean field decoupling and exact diagonalization for small systems to show the existence of an intermediate phase with a spin gap and short range N´eel correlations in the strong quantum limit (S=1/2).