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Title: Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure

Abstract

We report inelastic neutron scattering study of a quasi-two-dimensional S=1/2 dimer system piperazinium hexachlorodicuprate under hydrostatic pressure. The spin gap {Delta} becomes softened with the increase of the hydrostatic pressure up to P = 9.0 kbar. The observed threefold degenerate triplet excitation at P = 6.0 kbar is consistent with the theoretical prediction and the bandwidth of the dispersion relation is unaffected within the experimental uncertainty. At P = 9.0 kbar the spin gap is reduced to {Delta} = 0.55 meV from {Delta} = 1.0 meV at ambient pressure.

Authors:
 [1];  [2];  [3];  [3];  [4];  [4];  [4];  [4]
  1. ORNL
  2. NIST Center for Neutron Research (NCRN), Gaithersburg, MD
  3. Johns Hopkins University
  4. National Institute of Standards and Technology (NIST)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1000906
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 82; Journal Issue: 18; Journal ID: ISSN 1098--0121
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DIMERS; DISPERSION RELATIONS; EXCITATION; FORECASTING; HYDROSTATICS; NEUTRONS; SCATTERING; SPIN; TRIPLETS

Citation Formats

Hong, Tao, Stock, C., Cabrera, I., Broholm, C., Qiu, Y., Leao, J. B., Poulton, S. J., and Copley, J. R.D. Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure. United States: N. p., 2010. Web. doi:10.1103/PhysRevB.82.184424.
Hong, Tao, Stock, C., Cabrera, I., Broholm, C., Qiu, Y., Leao, J. B., Poulton, S. J., & Copley, J. R.D. Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure. United States. https://doi.org/10.1103/PhysRevB.82.184424
Hong, Tao, Stock, C., Cabrera, I., Broholm, C., Qiu, Y., Leao, J. B., Poulton, S. J., and Copley, J. R.D. 2010. "Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure". United States. https://doi.org/10.1103/PhysRevB.82.184424.
@article{osti_1000906,
title = {Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure},
author = {Hong, Tao and Stock, C. and Cabrera, I. and Broholm, C. and Qiu, Y. and Leao, J. B. and Poulton, S. J. and Copley, J. R.D.},
abstractNote = {We report inelastic neutron scattering study of a quasi-two-dimensional S=1/2 dimer system piperazinium hexachlorodicuprate under hydrostatic pressure. The spin gap {Delta} becomes softened with the increase of the hydrostatic pressure up to P = 9.0 kbar. The observed threefold degenerate triplet excitation at P = 6.0 kbar is consistent with the theoretical prediction and the bandwidth of the dispersion relation is unaffected within the experimental uncertainty. At P = 9.0 kbar the spin gap is reduced to {Delta} = 0.55 meV from {Delta} = 1.0 meV at ambient pressure.},
doi = {10.1103/PhysRevB.82.184424},
url = {https://www.osti.gov/biblio/1000906}, journal = {Physical Review B},
issn = {1098--0121},
number = 18,
volume = 82,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 2010},
month = {Fri Jan 01 00:00:00 EST 2010}
}