Spin Liquid in the Multiple-Spin Exchange Model on the Triangular Lattice: 3He on Graphite

G. Misguich, B. Bernu, C. Lhuillier, and C. Waldtmann
Phys. Rev. Lett. 81, 1098 – Published 3 August 1998
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Abstract

Using exact diagonalizations, we investigate the T=0 phase diagram of the multiple-spin exchange (MSE) model on the triangular lattice, we find a transition separating a ferromagnetic phase from a nonmagnetic gapped spin liquid phase. Systems far enough from the ferromagnetic transition have a metamagnetic behavior with magnetization plateaus at m/msat=0 and 1/2. The MSE has been proposed to describe solid 3He films adsorbed onto graphite, thus we compute the MSE heat capacity for parameters in the low density range of the 2nd layer and find a double-peak structure.

  • Received 6 March 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.1098

©1998 American Physical Society

Authors & Affiliations

G. Misguich1, B. Bernu1, C. Lhuillier1, and C. Waldtmann2

  • 1Laboratoire de Physique Théorique des Liquides, UMR 7600 of CNRS, Université P. et M. Curie, case 121, 4 Place Jussieu, 75252 Paris Cedex, France
  • 2Institut für Theoretische Physik, Universität Hannover, D-30167 Hannover, Germany

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Vol. 81, Iss. 5 — 3 August 1998

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