Universal quantum critical dynamics of two-dimensional antiferromagnets

Details Universal quantum critical dynamics of two-dimensional antiferromagnets Universal quantum critical dynamics of two-dimensional antiferromagnets

1992-04-10

arxiv.org/abs/cond-mat/9204001v2

Phys.Rev.Lett. 69 (1992) 2411

Physics

Condensed Matter

11 pages

Scientific paper

10.1103/PhysRevLett.69.2411

The universal dynamic and static properties of two dimensional antiferromagnets in the vicinity of a zero-temperature phase transition from long-range magnetic order to a quantum disordered phase are studied. Random antiferromagnets with both N\'{e}el and spin-glass long-range magnetic order are considered. Explicit quantum-critical dynamic scaling functions are computed in a 1/N expansion to two-loops for certain non-random, frustrated square lattice antiferromagnets. Implications for neutron scattering experiments on the doped cuprates are noted.

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