Spin Nematic Order in Multiple-Spin Exchange Models on the Triangular Lattice

Tsutomu Momoi, Philippe Sindzingre, and Kenn Kubo
Phys. Rev. Lett. 108, 057206 – Published 2 February 2012

Abstract

We figure out that the ground state of a multiple-spin exchange model applicable to thin films of solid He3 possesses an octahedral spin nematic order. In the presence of a magnetic field, it is deformed into an antiferroquadrupolar order in the perpendicular spin plane, in which lattice Z3 rotational symmetry is also broken. Furthermore, this system shows a narrow magnetization plateau at half, m/msat=1/2, which resembles recent magnetization measurements [H. Nema et al., Phys. Rev. Lett. 102, 075301 (2009)].

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  • Received 2 October 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.057206

© 2012 American Physical Society

Authors & Affiliations

Tsutomu Momoi1, Philippe Sindzingre2, and Kenn Kubo3

  • 1Condensed Matter Theory Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
  • 2Laboratoire de Physique Théorique de la Matière Condensée, UMR 7600 of CNRS, Université P. et M. Curie, case 121, 4 Place Jussieu, 75252 Paris Cedex, France
  • 3Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 229-8558, Japan

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Issue

Vol. 108, Iss. 5 — 3 February 2012

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