ePubs
The open archive for STFC research publications
Home
About ePubs
Content Policies
News
Help
Privacy/Cookies
Contact ePubs
Full Record Details
Persistent URL
http://purl.org/net/epubs/work/53783309
Record Status
Checked
Record Id
53783309
Title
One-dimensional quantum magnetism in the S = 1/2 Mo(V) system KMoOP2O7
Contributors
AH Abdeldaim (STFC Rutherford Appleton Lab., and Birmingham Univ.)
,
AA Tsirlin
,
J Ollivier
,
C Ritter
,
D Fortes (STFC Rutherford Appleton Lab.)
,
RS Perry (STFC Rutherford Appleton Lab., and University College London)
,
L Clark
,
GJ Nilsen (STFC Rutherford Appleton Lab., and Stavanger Univ., Norway)
Abstract
We present a comprehensive experimental and ab initio study of the S = 1/2 Mo5+ system, KMoOP2O7, and show that it realizes the S = 1/2 Heisenberg chain antiferromagnet model. Powder neutron diffraction reveals that KMoOP2O7 forms a magnetic network comprised of pairs of Mo5+ chains within its monoclinic P21/n structure. Antiferromagnetic interactions within the Mo5+ chains are identified through magnetometry measurements and confirmed by analysis of the magnetic specific heat. The latter reveals a broad feature centered on TN = 0.54 K, which we ascribe to the onset of long-range antiferromagnetic order. No magnetic Bragg scattering is observed in powder neutron-diffraction data collected at 0.05 K, however, which is consistent with a strongly suppressed ordered moment with an upper limit μord < 0.15 μB. The one-dimensional character of the magnetic correlations in KMoOP2O7 is verified through analysis of inelastic neutron-scattering data, resulting in a model with J2 ≈ 34 K and J1 ≈ −2 K for the intrachain and interchain exchange interactions, respectively. The origin of these experimental findings are addressed through density-functional theory calculations.
Organisation
ISIS
,
ISIS-HRPD
,
STFC
,
ISIS-MAT-CHAR-LAB
Keywords
Funding Information
STFC
Related Research Object(s):
53941376
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Phys Rev B
107, no. 1 (2023): 014415.
doi:10.1103/PhysRevB.107.014415
2023
Showing record 1 of 1
Recent Additions
Browse Organisations
Browse Journals/Series
Login to add & manage publications and access information for OA publishing
Username:
Password:
Useful Links
Chadwick & RAL Libraries
SHERPA FACT
SHERPA RoMEO
SHERPA JULIET
Journal Checker Tool
Google Scholar