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Role of anisotropy in the spin-dimer compound BaCuSi2O6

Abstract:
We present results of magnetization and electron paramagnetic resonance experiments on the spin-dimer system BaCu Si2 O6. Evidence indicates that the origin of anisotropic terms in the spin Hamiltonian lies in magnetic dipolar interactions. Axial symmetry breaking is on a very small energy scale of ≤11 mK, confirming Bose-Einstein condensation critical scaling over an extended temperature range in the vicinity of the quantum critical point. © 2006 The American Physical Society.
Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.74.180401

Authors


Sebastian, SE More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
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Journal:
PHYSICAL REVIEW B
Volume:
74
Issue:
18
Publication date:
2006-11-05
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
URN:
uuid:b7245bcd-1881-4361-93db-10a43e2d6fbd
Source identifiers:
134194
Local pid:
pubs:134194
Language:
English

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