Phonon-Modulated Magnetic Interactions and Spin Tomonaga-Luttinger Liquid in the p-Orbital Antiferromagnet CsO2
Klanjsek M, Arcon D, Sans A, Adler P, Jansen M, Felser C (2015)
Publication Type: Journal article
Publication year: 2015
Journal
Book Volume: 115
Article Number: 057205
Journal Issue: 5
DOI: 10.1103/PhysRevLett.115.057205
Abstract
The magnetic response of antiferromagnetic CsO2, coming from the p-orbital S=1/2 spins of anionic O2- molecules, is followed by Cs133 nuclear magnetic resonance across the structural phase transition occurring at Ts1=61K on cooling. Above Ts1, where spins form a square magnetic lattice, we observe a huge, nonmonotonic temperature dependence of the exchange coupling originating from thermal librations of O2- molecules. Below Ts1, where antiferromagnetic spin chains are formed as a result of p-orbital ordering, we observe a spin Tomonaga-Luttinger-liquid behavior of spin dynamics. These two interesting phenomena, which provide rare simple manifestations of the coupling between spin, lattice, and orbital degrees of freedom, establish CsO2 as a model system for molecular solids.
Involved external institutions
Jožef Stefan Institute
Slovenia (SI)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Slovenia (SI)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
How to cite
APA:
Klanjsek, M., Arcon, D., Sans, A., Adler, P., Jansen, M., & Felser, C. (2015). Phonon-Modulated Magnetic Interactions and Spin Tomonaga-Luttinger Liquid in the p-Orbital Antiferromagnet CsO2. Physical Review Letters, 115(5). https://doi.org/10.1103/PhysRevLett.115.057205
MLA:
Klanjsek, Martin, et al. "Phonon-Modulated Magnetic Interactions and Spin Tomonaga-Luttinger Liquid in the p-Orbital Antiferromagnet CsO2." Physical Review Letters 115.5 (2015).
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