Spin-singlet quantum ground state in one-dimensional magnet vanadyl diacetate

•Almost ideal Heisenberg antiferromagnetic chain compound VO(CH3COO)2 was studied by ESR.•Neither the long-range magnetic order nor the spin-Peierls transition occur down to 2 K.•The main exchange interactions have been estimated.•Spin-singlet quantum ground state has been determined. X-band ESR tec...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2019-03, Vol.473, p.236-240
Main Authors: Zvereva, E.A., Vasilchikova, T.M., Stratan, M.I., Ibragimov, S.A., Glazkova, I.S., Sobolev, A.V., Vasiliev, A.N.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Chains
Chemical compounds
Ground state
Magnetism
Quantum theory
Superhigh frequencies
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Summary:•Almost ideal Heisenberg antiferromagnetic chain compound VO(CH3COO)2 was studied by ESR.•Neither the long-range magnetic order nor the spin-Peierls transition occur down to 2 K.•The main exchange interactions have been estimated.•Spin-singlet quantum ground state has been determined. X-band ESR technique has been successfully applied to study S = 1/2 spin chain compound vanadyl diacetate VO(CH3COO)2. Parameter of the intrachain interactions for uniform Heisenberg antiferromagnetic chain amounts to J/kB = −167 К, while the ratio between the interchain (J′ 
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2018.10.014