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

Abstract

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.

Authors:
 [1];  [1];  [2];  [3];  [1]
  1. ETH Zurich (Switzerland). Lab. for Solid State Physics. Neutron Scattering and Magnetism
  2. ETH Zurich (Switzerland). Lab. for Solid State Physics. Neutron Scattering and Magnetism; National Inst. of Chemical Physics and Biophysics (NICPB), Tallinn (Estonia)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
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
OSTI Identifier:
1265623
Alternate Identifier(s):
OSTI ID: 1209192
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 5; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Perren, G., Möller, J. S., Hüvonen, D., Podlesnyak, Andrey A., and Zheludev, A. Spin dynamics in pressure-induced magnetically ordered phases in (C4H12N2)Cu2Cl6. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.054413.
Perren, G., Möller, J. S., Hüvonen, D., Podlesnyak, Andrey A., & Zheludev, A. Spin dynamics in pressure-induced magnetically ordered phases in (C4H12N2)Cu2Cl6. United States. https://doi.org/10.1103/PhysRevB.92.054413
Perren, G., Möller, J. S., Hüvonen, D., Podlesnyak, Andrey A., and Zheludev, A. 2015. "Spin dynamics in pressure-induced magnetically ordered phases in (C4H12N2)Cu2Cl6". United States. https://doi.org/10.1103/PhysRevB.92.054413. https://www.osti.gov/servlets/purl/1265623.
@article{osti_1265623,
title = {Spin dynamics in pressure-induced magnetically ordered phases in (C4H12N2)Cu2Cl6},
author = {Perren, G. and Möller, J. S. and Hüvonen, D. and Podlesnyak, Andrey A. and Zheludev, A.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.92.054413},
url = {https://www.osti.gov/biblio/1265623}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 5,
volume = 92,
place = {United States},
year = {Fri Aug 07 00:00:00 EDT 2015},
month = {Fri Aug 07 00:00:00 EDT 2015}
}

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Cited by: 15 works
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Works referenced in this record:

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Works referencing / citing this record:

The cold neutron chopper spectrometer at the Spallation Neutron Source—A review of the first 8 years of operation
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
journal, July 2019


High-pressure Raman study of the quantum magnet ( C 4 H 12 N 2 ) Cu 2 Cl 6
journal, November 2017


Quantum criticality in a three-dimensional spin system at zero field and pressure
journal, October 2017


Interplay of Spin and Spatial Anisotropy in Low-Dimensional Quantum Magnets with Spin 1/2
journal, December 2018