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Article
High-field behavior of the spin gap compound Sr2Cu(BO3)2
Physical Review B
  • Suchitra E. Sebastian, Stanford University
  • D. Yin, Stanford University
  • P. Tanedo, Stanford University
  • G.A. Jorge, Stanford University
  • N. Harrison, Los Alamos National Laboratory
  • M. Jaime, Los Alamos National Laboratory
  • Yurij Mozharivskyj, Iowa State University
  • Gordon J. Miller, Iowa State University
  • J. Krzystek, Florida State University/National High Magnetic Field Laboratory
  • S.A. Zvyagin, Florida State University/National High Magnetic Field Laboratory
  • I.R. Fisher, Stanford University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2005
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
Citation Information
Suchitra E. Sebastian, D. Yin, P. Tanedo, G.A. Jorge, et al.. "High-field behavior of the spin gap compound Sr2Cu(BO3)2" Physical Review B Vol. 71 Iss. 212405 (2005) p. 16 - 4
Available at: http://works.bepress.com/gordon-miller/51/