Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure
arXiv:1011.0635 · doi:10.1103/PhysRevB.82.184424
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 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 0.55 meV from 1.0 meV at ambient pressure.
4 pages, 5 figures
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- Bose-Einstein Condensation in Magnetic Insulators
- Quantum Magnets under Pressure: Controlling Elementary Excitations in TlCuCl3
- Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions
- Pressure-Induced Magnetic Quantum Phase Transition in Gapped Spin System KCuCl3
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Cited by in corpus (4)
- Direct observation of the Higgs amplitude mode in a two-dimensional quantum antiferromagnet near the quantum critical point
- Effect of disorder on a pressure-induced magnetic quantum phase transition
- Field induced non-BEC transitions in frustrated magnets
- One-dimensional physics of the frustrated quantum magnet PHCC