Effective Theory of Magnetization Plateaux in the Shastry-Sutherland Lattice

A. Abendschein and S. Capponi
Phys. Rev. Lett. 101, 227201 – Published 26 November 2008

Abstract

We use the nonperturbative Contractor-Renormalization method (CORE) in order to derive an effective model for triplet excitations on the Shastry-Sutherland lattice. For strong enough magnetic fields, various magnetization plateaux are observed, e.g., at 1/8, 1/4, 1/3 of the saturation, as found experimentally in a related compound. Moreover, other stable plateaux are found at 1/9, 1/6, or 2/9. We give a critical review of previous works and try to resolve some apparent inconsistencies between various theoretical approaches.

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  • Received 7 July 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.227201

©2008 American Physical Society

Authors & Affiliations

A. Abendschein and S. Capponi*

  • Laboratoire de Physique Théorique, Université de Toulouse, UPS, (IRSAMC), F-31062 Toulouse, France
  • CNRS, LPT (IRSAMC), F-31062 Toulouse, France

  • *capponi@irsamc.ups-tlse.fr

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Issue

Vol. 101, Iss. 22 — 28 November 2008

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