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Hindered magnetic order from mixed dimensionalities in CuP2O6
journal contribution
posted on 2018-08-13, 14:01 authored by Ramesh Nath, K.M. Ranjith, J. Sichelschmidt, M. Baenitz, Yu Skourski, F. Alet, Ioannis RousochatzakisIoannis Rousochatzakis, Alexander A. TsirlinWe present a combined experimental and theoretical study of the spin-12 compound CuP2O6 that features a network of two-dimensional (2D) antiferromagnetic (AFM) square planes, interconnected via one-dimensional (1D) AFM spin chains. Magnetic susceptibility, high-field magnetization, and electron spin resonance (ESR) data, as well as microscopic density-functional band-structure calculations and subsequent quantum Monte Carlo simulations, show that the coupling J2D40 K in the layers is an order of magnitude larger than J1D3 K in the chains. Below TN8 K, CuP2O6 develops long-range order, as evidenced by a weak net moment on the 2D planes induced by anisotropic magnetic interactions of Dzyaloshinsky-Moriya type. A striking feature of this 3D ordering transition is that the 1D moments grow significantly slower than the ones on the 2D units, which is evidenced by the persistent paramagnetic ESR signal below TN. Compared to typical quasi-2D magnets, the ordering temperature of CuP2O6 TN/J2D0.2 is unusually low, showing that weakly coupled spins sandwiched between 2D magnetic units effectively decouple these units and impede the long-range ordering.
Funding
Part of this work has been supported by EuroMagNET II under the EU contract number 228043. RN was funded by MPG-DST (Max Planck Gesellschaft, Germany and Department of Science and Technology, India) fellowship. AT acknowledges financial support from the Mobilitas program of the ESF (grant MTT77). FA thanks GENCI (grant 2013-x2013050225) and CALMIP for the use of their numerical resources. IR acknowledges support from the Deutsche Forschungsgemeinschaft (DFG) under the EmmyNoether program.
History
School
- Science
Department
- Physics
Published in
Physical Review B - Condensed Matter and Materials PhysicsVolume
89Issue
1Citation
NATH, R. ... et al, 2014. Hindered magnetic order from mixed dimensionalities in CuP2O6. Physical Review B, 89 (1), 014407.Publisher
© American Physical SocietyVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2014Notes
This paper was published in the journal Physical Review B and the definitive published version is available at https://doi.org/10.1103/PhysRevB.89.014407.ISSN
2469-9950eISSN
2469-9969Publisher version
Language
- en