Geometric frustration and dimensional reduction at a quantum critical point

被引：43

作者：

Batista, C. D. ^{[1
]}

Schmalian, J.

Kawashima, N.

Sengupta, P.

Sebastian, S. E.

Harrison, N.

Jaime, M.

Fisher, I. R.

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[2] Los Alamos Natl Lab, MPA NHMFL, Los Alamos, NM 87545 USA

[3] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[4] Ames Lab, Ames, IA 50011 USA

[5] Univ Tokyo, Inst Solid State Phys, Chiba 2278581, Japan

[6] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[7] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[8] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 25期

基金：

美国国家科学基金会;

关键词：

Barium compounds - Bose-Einstein condensation - Computational geometry - Copper compounds - Lattice constants - Measurement theory;

D O I：

10.1103/PhysRevLett.98.257201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 layers coupled by a frustrating interaction. Our theoretical predictions for the critical behavior correspond very well with recent measurements in BaCuSi2O6 [ S. E. Sebastian et al., Nature (London) 441, 617 (2006)].

引用

页数：4

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