skip to main content

DOE PAGESDOE PAGES

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

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:
OSTI Identifier:
1265623
Grant/Contract Number:
AC05-00OR22725; 246543; 608881; IUT23-03; PUT451
Type:
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)
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source; ETH Zurich (Switzerland). Lab. for Solid State Physics
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Swiss National Science Foundation (SNSF) (Switzerland); ETH Zurich (Switzerland); European Union (EU); Estonian Ministry of Education; Estonian Research Council
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY