Quantum Phase Transition in Frustrated Two-Dimensional Antiferromagnets

Details Quantum Phase Transition in Frustrated Two-Dimensional Antiferromagnets Quantum Phase Transition in Frustrated Two-Dimensional Antiferromagnets

1994-02-02

arxiv.org/abs/cond-mat/9402006v1

Nuclear Physics B 426 FS, 601 (1994)

Physics

Condensed Matter

51 pages, REVTEX 3.0, 5 uuencoded EPS figures appended, YCTP-xxzz

Scientific paper

10.1016/0550-3213(94)90023-X

We study frustrated, two-dimensional, quantum antiferromagnets in the vicinity of a quantum transition from a non-collinear, magnetically-ordered ground state to a quantum disordered phase. The general scaling properties of this transition are described. A detailed study of a particular field-theoretic model of the transition, with bosonic spin-1/2 spinon fields, is presented. Explicit universal scaling forms for a variety of observables are obtained and the results are compared with numerical data on the spin-1/2 triangular antiferromagnet. Universal properties of an alternative field-theory, with confined spinons, are also briefly noted.

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