Geometric Frustration and Dimensional Reduction at a Quantum Critical Point

2006/08/31 by C. D. Batista, J. Schmalian, N. Kawashima +5 · 1 citation
Physics and Astronomy · #cond-mat.str-el #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.98.257201

5 pages, 2 figures

arxiv created 2007/04/27 · arxiv updated 2009/12/01

Abstract

We show that the spatial dimensionality of the quantum critical point associated with Bose--Einstein condensation at T=0 is reduced when the underlying lattice comprises a set of layers coupled by a frustrating interaction. Our theoretical predictions for the critical temperature as a function of the chemical potential correspond very well with recent measurements in BaCuSi₂O₆ [S. E. Sebastian et al, Nature 411, 617 (2006)].

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