Hong, T.
, Stock, C.
, Cabrera, I.
, Broholm, C.
, Qiu, Y.
, Leao, J.
, Poulton, S.
and Copley, J.
(2010),
Neutron Scattering Study of a Quasi-2D Spin-1/2 Dimer System Piperazinium Hexachlorodicuprate Under Hydrostatic Pressure, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906383
(Accessed October 10, 2025)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Neutron Scattering Study of a Quasi-2D Spin-1/2 Dimer System Piperazinium Hexachlorodicuprate Under Hydrostatic Pressure
Published
Author(s)
Tao Hong, Chris Stock, I. Cabrera, , , , ,
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 δ becomes softened with the increase of the hydrostatic pressure while the bandwidth of the dispersion relation is almost unaffected. The observed threefold degenerate triplet excitation under hydrostatic pressure is consistent with the theoretical prediction. At P=9.0 kbar the spin gap is reduced to δ=0.55 meV from δ=1.0 meV at ambient pressure. The results allow us to predict a soft-mode quantum phase transition in this system at Papproximately equal}20 kbar.Citation
Physical Review B
Volume
12
Pub Type
Journals
Download Paper
Keywords
dimer, pressure, neutron scattering, spin excitation
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact [email protected].
Created November 21, 2010, Updated October 12, 2021