Geometric frustration and dimensional reduction at a quantum critical point

TitleGeometric frustration and dimensional reduction at a quantum critical point
Publication TypeJournal Article
Year of Publication2007
AuthorsBatista CD, Schmalian J, Kawashima N, Sengupta P, Sebastian SE, Harrison N, Jaime M, Fisher IR
Journal TitlePhysical Review Letters
Volume98
Pages257201
Date PublishedJun
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberISI:000247469400047
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 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)].

DOI10.1103/PhysRevLett.98.257201
Alternate JournalPhys. Rev. Lett.