Ground-State Phase Diagram for the Three-Dimensional Orthogonal-Dimer System

Akihisa Koga

doi:10.1143/JPSJ.69.3509

paper

Ground-State Phase Diagram for the Three-Dimensional Orthogonal-Dimer System

arXiv:cond-mat/0009266 · doi:10.1143/JPSJ.69.3509

Abstract

We investigate quantum phase transitions in the three-dimensional orthogonal-dimer system of the compound $SrC u_{2} (B O_{3})_{2}$ by means of the series expansion technique. We then discuss the phase diagram where the dimer phase, the Haldane phase, the frustration-induced disordered phase and the magnetically ordered phase compete with each other. It is found that the compound $SrC u_{2} (B O_{3})_{2}$ is located in the dimer phase close to the phase boundary.

4 pages, submmited to J. Phys. Soc. Jpn

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