Campus Units

Chemistry

Document Type

Article

Publication Version

Published Version

Publication Date

2005

Journal or Book Title

Physical Review B

Volume

71

Issue

212405

First Page

16

Last Page

4

DOI

10.1103/PhysRevB.71.212405

Abstract

We report magnetization and heat capacity measurements of single crystal samples of the spin gap compound Sr2Cu(BO3)2. Low-field data show that the material has a singlet ground state comprising dimers with intradimer coupling J=100K. High field data reveal the role of weak interdimer coupling. For fields that are large compared to the spin gap, triplet excitations are observed for significantly smaller fields than predicted for isolated dimers, indicating that weak interdimer coupling leads to triplet delocalization. High field magnetization behavior at low temperatures suggests additional cooperative effects.

Comments

This article is from Physical Review B 71 (2005): 1, doi:10.1103/PhysRevB.71.212405. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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