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

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

2000-09-14

arxiv.org/abs/cond-mat/0009223v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages 3 figures

Scientific paper

10.1103/PhysRevLett.86.1618

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 N\'{e}el 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.

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