Spin dynamics in pressure-induced magnetically ordered phases in (C4 H12 N2)Cu2Cl6

G. Perren; J. S. Möller; D. Hüvonen; A. A. Podlesnyak; A. Zheludev

doi:10.1103/PhysRevB.92.054413

Spin dynamics in pressure-induced magnetically ordered phases in (C4 H12 N2)Cu2Cl6

G. Perren, J. S. Möller, D. Hüvonen, A. A. Podlesnyak, A. Zheludev

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16 Scopus citations

Abstract

We present inelastic neutron-scattering experiments on the S=1/2 frustrated gapped quantum magnet piperazinium hexachlorodicuprate (PHCC) under applied hydrostatic pressure. These results show that at 9 kbar the magnetic triplet excitations in the system are gapless, contrary to what was previously reported. Our results are in agreement with recent muon-spin relaxation experiments which found magnetic order above a quantum-critical point at 4.3 kbar. We show that the changes in the excitation spectrum can be primarily attributed to the change in a single exchange pathway.

Original language	English
Article number	054413
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.92.054413
State	Published - Aug 7 2015

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10.1103/PhysRevB.92.054413

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title = "Spin dynamics in pressure-induced magnetically ordered phases in (C4 H12 N2)Cu2Cl6",

abstract = "We present inelastic neutron-scattering experiments on the S=1/2 frustrated gapped quantum magnet piperazinium hexachlorodicuprate (PHCC) under applied hydrostatic pressure. These results show that at 9 kbar the magnetic triplet excitations in the system are gapless, contrary to what was previously reported. Our results are in agreement with recent muon-spin relaxation experiments which found magnetic order above a quantum-critical point at 4.3 kbar. We show that the changes in the excitation spectrum can be primarily attributed to the change in a single exchange pathway.",

author = "G. Perren and M{\"o}ller, \{J. S.\} and D. H{\"u}vonen and Podlesnyak, \{A. A.\} and A. Zheludev",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society. {\textcopyright}2015 American Physical Society.",

year = "2015",

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language = "English",

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T1 - Spin dynamics in pressure-induced magnetically ordered phases in (C4 H12 N2)Cu2Cl6

AU - Perren, G.

AU - Möller, J. S.

AU - Hüvonen, D.

AU - Podlesnyak, A. A.

AU - Zheludev, A.

PY - 2015/8/7

Y1 - 2015/8/7

N2 - We present inelastic neutron-scattering experiments on the S=1/2 frustrated gapped quantum magnet piperazinium hexachlorodicuprate (PHCC) under applied hydrostatic pressure. These results show that at 9 kbar the magnetic triplet excitations in the system are gapless, contrary to what was previously reported. Our results are in agreement with recent muon-spin relaxation experiments which found magnetic order above a quantum-critical point at 4.3 kbar. We show that the changes in the excitation spectrum can be primarily attributed to the change in a single exchange pathway.

AB - We present inelastic neutron-scattering experiments on the S=1/2 frustrated gapped quantum magnet piperazinium hexachlorodicuprate (PHCC) under applied hydrostatic pressure. These results show that at 9 kbar the magnetic triplet excitations in the system are gapless, contrary to what was previously reported. Our results are in agreement with recent muon-spin relaxation experiments which found magnetic order above a quantum-critical point at 4.3 kbar. We show that the changes in the excitation spectrum can be primarily attributed to the change in a single exchange pathway.

UR - https://www.scopus.com/pages/publications/84939832310

U2 - 10.1103/PhysRevB.92.054413

DO - 10.1103/PhysRevB.92.054413

M3 - Article

AN - SCOPUS:84939832310

SN - 1098-0121

VL - 92

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 5

M1 - 054413

ER -

Spin dynamics in pressure-induced magnetically ordered phases in (C4 H12 N2)Cu2Cl6

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