Phase diagrams of spin ladders with ferromagnetic legs

T. Vekua; G. I. Japaridze; H. -J. Mikeska

doi:10.1103/physrevb.67.064419

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Phase diagrams of spin ladders with ferromagnetic legs

T. Vekua·G. I. Japaridze·H. -J. Mikeska

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Abstract

The low-temperature properties of the spin S=1/2 ladder with anisotropic ferromagnetic legs are studied using the continuum limit bosonization approach. The weak-coupling ground state phase diagram of the model is obtained for a wide range of coupling constants and several unconventional gapless ''spin-liquid'' phases are shown to exist for ferromagnetic coupling. The behavior of the ladder system in the vicinity of the ferromagnetic instability point is discussed in detail.

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T. Vekua, G. I. Japaridze, H. -J. Mikeska. 2002-09-30. Phase diagrams of spin ladders with ferromagnetic legs. https://doi.org/10.1103/physrevb.67.064419

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