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In-gap spin excitations and finite triplet lifetimes in the dilute singlet ground state system SrCu(2-x)Mgx(BO3)2.

Publication ,  Journal Article
Haravifard, S; Dunsiger, SR; El Shawish, S; Gaulin, BD; Dabkowska, HA; Telling, MTF; Perring, TG; Bonca, J
Published in: Physical review letters
December 2006

High resolution neutron scattering measurements on a single crystal of SrCu(2-x)Mgx(BO3)2 with x approximately 0.05 reveal the presence of new spin excitations within the gap of this quasi-two-dimensional, singlet ground state system. The application of a magnetic field induces Zeeman-split states associated with S=1/2 unpaired spins which are antiferromagnetically correlated with the bulk singlet. Substantial broadening of both the one- and two-triplet excitations in the doped single crystal is observed, as compared with pure SrCu2(BO3)2. Theoretical calculations using a variational algorithm and a single quenched magnetic vacancy on an infinite lattice are shown to qualitatively account for these effects.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

December 2006

Volume

97

Issue

24

Start / End Page

247206

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Haravifard, S., Dunsiger, S. R., El Shawish, S., Gaulin, B. D., Dabkowska, H. A., Telling, M. T. F., … Bonca, J. (2006). In-gap spin excitations and finite triplet lifetimes in the dilute singlet ground state system SrCu(2-x)Mgx(BO3)2. Physical Review Letters, 97(24), 247206. https://doi.org/10.1103/physrevlett.97.247206
Haravifard, S., S. R. Dunsiger, S. El Shawish, B. D. Gaulin, H. A. Dabkowska, M. T. F. Telling, T. G. Perring, and J. Bonca. “In-gap spin excitations and finite triplet lifetimes in the dilute singlet ground state system SrCu(2-x)Mgx(BO3)2.Physical Review Letters 97, no. 24 (December 2006): 247206. https://doi.org/10.1103/physrevlett.97.247206.
Haravifard S, Dunsiger SR, El Shawish S, Gaulin BD, Dabkowska HA, Telling MTF, et al. In-gap spin excitations and finite triplet lifetimes in the dilute singlet ground state system SrCu(2-x)Mgx(BO3)2. Physical review letters. 2006 Dec;97(24):247206.
Haravifard, S., et al. “In-gap spin excitations and finite triplet lifetimes in the dilute singlet ground state system SrCu(2-x)Mgx(BO3)2.Physical Review Letters, vol. 97, no. 24, Dec. 2006, p. 247206. Epmc, doi:10.1103/physrevlett.97.247206.
Haravifard S, Dunsiger SR, El Shawish S, Gaulin BD, Dabkowska HA, Telling MTF, Perring TG, Bonca J. In-gap spin excitations and finite triplet lifetimes in the dilute singlet ground state system SrCu(2-x)Mgx(BO3)2. Physical review letters. 2006 Dec;97(24):247206.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

December 2006

Volume

97

Issue

24

Start / End Page

247206

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences