Evidence of a spin liquid phase in the frustrated honeycomb lattice

Details Evidence of a spin liquid phase in the frustrated honeycomb lattice Evidence of a spin liquid phase in the frustrated honeycomb lattice

2011-03-30

arxiv.org/abs/1103.5888v1

Modern Physics Letters B (MPLB) 25, 891 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, to be published in Modern Physics Letters B

Scientific paper

10.1142/S0217984911026590

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).

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