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  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). Phonon-Modulated Magnetic Interactions and Spin Tomonaga-Luttinger Liquid in the p-Orbital Antiferromagnet CsO2. Physical Review Letters, 115(5): 7205, pp. 1-6. doi:10.1103/PhysRevLett.115.057205.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-3C16-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-17DC-E
Genre: Journal Article

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 Creators:
Klanjsek, M.1, Author
Arcon, D.1, Author
Sans, A.2, Author              
Adler, P.3, Author              
Jansen, Martin2, Author              
Felser, C.4, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863435              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: The magnetic response of antiferromagnetic CsO2, coming from the p-orbital S = 1/2 spins of anionic O-2(-) molecules, is followed by Cs-133 nuclear magnetic resonance across the structural phase transition occurring at T-s1 = 61 K on cooling. Above T-s1, where spins form a square magnetic lattice, we observe a huge, nonmonotonic temperature dependence of the exchange coupling originating from thermal librations of O-2(-) molecules. Below T-s1, 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.

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Language(s): eng - English
 Dates: 2015-07-312015-07-31
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 115 (5) Sequence Number: 7205 Start / End Page: 1 - 6 Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1