Emergence of one-dimensional physics from the distorted Shastry-Sutherland lattice

M. Moliner, I. Rousochatzakis, F. Mila

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Abstract

Motivated by the ongoing investigation of SrCu2(BO 3)2 under pressure, we study a variant of the two-dimensional Shastry-Sutherland (SS) spin-1/2 model with two types of dimers. Combined with the frustration of the SS model, this modification induces, in a large parameter range, a dimensional reduction at low energies, with nearly decoupled effective S=1 Haldane chains forming along one of the diagonals of the lattice. We also present evidence that the intermediate plaquette solid phase of the undistorted SS model remains stable in a finite region of the phase diagram.

Original languageEnglish (US)
Article number140414
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number14
DOIs
StatePublished - Apr 28 2011

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