Spin dynamics in pressure-induced magnetically ordered phases in (C4H12N2)Cu2Cl6

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

doi:10.1103/PhysRevB.92.054413

Title: Spin dynamics in pressure-induced magnetically ordered phases in $(C_{4} H_{12} N_{2}) {Cu}_{2} {Cl}_{6}$

Journal Article · Fri Aug 07 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.92.054413· OSTI ID:1265623

Perren, G. ^[1]; Möller, J. S. ^[1]; Hüvonen, D. ^[2]; Podlesnyak, Andrey A. ^[3]; Zheludev, A. ^[1]

ETH Zurich (Switzerland). Lab. for Solid State Physics. Neutron Scattering and Magnetism
ETH Zurich (Switzerland). Lab. for Solid State Physics. Neutron Scattering and Magnetism; National Inst. of Chemical Physics and Biophysics (NICPB), Tallinn (Estonia)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division

In this paper, 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. Finally, we show that the changes in the excitation spectrum can be primarily attributed to the change in a single exchange pathway.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Swiss National Science Foundation (SNSF); ETH Zurich (Switzerland); European Union (EU); Estonian Ministry of Education; Estonian Research Council

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1265623

Alternate ID(s):: OSTI ID: 1209192

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 5; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 15 works

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Spin waves near the edge of halogen substitution induced magnetic order in ${Ni (Cl}_{1 - x} {Br}_{x} {)_{2} \cdot 4 {SC (NH}_{2})}_{2}$ Mannig, A.; Povarov, K. Yu.; Ollivier, J. Physical Review B, Vol. 98, Issue 21 https://doi.org/10.1103/physrevb.98.214419	journal	December 2018
The cold neutron chopper spectrometer at the Spallation Neutron Source—A review of the first 8 years of operation Ehlers, G.; Podlesnyak, A. A.; Kolesnikov, A. I. Review of Scientific Instruments, Vol. 87, Issue 9 https://doi.org/10.1063/1.4962024	journal	September 2016
Dynamics and field-induced order in the layered spin $S = 1 / 2$ dimer system ${(C_{5} H_{6} N_{2} F)}_{2} {CuCl}_{4}$ Blosser, D.; Horvatić, M.; Bewley, R. Physical Review Materials, Vol. 3, Issue 7 https://doi.org/10.1103/physrevmaterials.3.074410	journal	July 2019
High-pressure Raman study of the quantum magnet $(C_{4} H_{12} N_{2}) {Cu}_{2} {Cl}_{6}$ Bettler, S.; Simutis, G.; Perren, G. Physical Review B, Vol. 96, Issue 17 https://doi.org/10.1103/physrevb.96.174431	journal	November 2017
Quantum criticality in a three-dimensional spin system at zero field and pressure Povarov, K. Yu.; Mannig, A.; Perren, G. Physical Review B, Vol. 96, Issue 14 https://doi.org/10.1103/physrevb.96.140414	journal	October 2017
Interplay of Spin and Spatial Anisotropy in Low-Dimensional Quantum Magnets with Spin 1/2 Orendáčová, Alžbeta; Tarasenko, Róbert; Tkáč, Vladimír Crystals, Vol. 9, Issue 1 https://doi.org/10.3390/cryst9010006	journal	December 2018

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Title: Spin dynamics in pressure-induced magnetically ordered phases in ( C 4 H 12 N 2 ) Cu 2 Cl 6

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Title: Spin dynamics in pressure-induced magnetically ordered phases in $(C_{4} H_{12} N_{2}) {Cu}_{2} {Cl}_{6}$