Field-induced 3- and 2-dimensional freezing in a quantum spin liquid

Abstract

Field-induced commensurate transverse magnetic ordering is observed in the Haldane-gap compound \nd by means of neutron diffraction. Depending on the direction of applied field, the high-field phase is shown to be either a 3-dimensional ordered Néel state or a short-range ordered state with dominant 2-dimensional spin correlations. The structure of the high-field phase is determined, and properties of the observed quantum phase transition are discussed.

4 pages 3 figures

References in corpus (1)

• Anisotropic spin freezing in the S=1/2 zigzag ladder compound SrCuO2

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