Asymmetric quintuplet condensation in the frustrated S=1 spin dimer compound Ba3Mn2O8

E. C. Samulon; Y. Kohama; R. D. McDonald; M. C. Shapiro; K. A. Al-Hassanieh; C. D. Batista; M. Jaime; I. R. Fisher

doi:10.1103/PhysRevLett.103.047202

Asymmetric quintuplet condensation in the frustrated S=1 spin dimer compound Ba3Mn2O8

Strongly Correlated Electrons 2009-07-23 v2

Authors: E. C. Samulon , Y. Kohama , R. D. McDonald , M. C. Shapiro , K. A. Al-Hassanieh , C. D. Batista , M. Jaime , I. R. Fisher

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Abstract

Ba3Mn2O8 is a spin-dimer compound based on pairs of S = 1, 3d2, Mn5+ ions arranged on a triangular lattice. Antiferromagnetic intradimer exchange leads to a singlet ground state in zero-field, with excited triplet and quintuplet states at higher energy. High field thermodynamic measurements are used to establish the phase diagram, revealing a substantial asymmetry of the quintuplet condensate. This striking effect, all but absent for the triplet condensate, is due to a fundamental asymmetry in quantum fluctuations of the paramagnetic phases near the various critical fields.

Keywords

spin dimer frustrated magnetism Ba3Mn2O8 quintuplet condensation quantum fluctuations phase diagram

Cite

@article{arxiv.0905.0467,
  title  = {Asymmetric quintuplet condensation in the frustrated S=1 spin dimer compound Ba3Mn2O8},
  author = {E. C. Samulon and Y. Kohama and R. D. McDonald and M. C. Shapiro and K. A. Al-Hassanieh and C. D. Batista and M. Jaime and I. R. Fisher},
  journal= {arXiv preprint arXiv:0905.0467},
  year   = {2009}
}

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5 pages, 4 figures

Asymmetric quintuplet condensation in the frustrated S=1 spin dimer compound Ba3Mn2O8

Abstract

Keywords

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