Quantum phase transitions of the S=1 Shastry-Sutherland model

Akihisa Koga; Norio Kawakami; Manfred Sigrist

doi:10.1143/jpsj.72.938

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Quantum phase transitions of the S=1 Shastry-Sutherland model

Akihisa Koga·Norio Kawakami·Manfred Sigrist

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Abstract

We investigate quantum phase transitions of the two-dimensional S=1 Shastry-Sutherland model, which is characterized by the frustrated orthogonal-dimer structure, by means of the exact diagonalization method and the Ising-type series expansion method. We clarify how distinct spin gap phases realized in the chain system are adiabatically connected to those in the two-dimensional Shastry-Sutherland model. The effect of single-ion anisotropy is also discussed.

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Akihisa Koga, Norio Kawakami, Manfred Sigrist. 2002-11-19. Quantum phase transitions of the S=1 Shastry-Sutherland model. https://doi.org/10.1143/jpsj.72.938

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