Spin-peierls transition in dimerized stacks of anion-radical salt (N-Me-2,5-di-Me-Pz)(TCNQ)2, (Pz is pyrazine) |
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| Authors: | A. Radvá ková ,D.V. Ziolkovskiy,V.O. Cheranovskii,A. Feher,M. Kajňaková ,O.N. Kazheva,G.G. Alexandrov,O.A. Dyachenko,V.A. Starodub |
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| Affiliation: | aCentre of Low Temperature Physics of the Faculty of Science UPJŠ and IEP SAS, Park Angelinum 9, SK-04154 Košice, Slovakia;bV. Karazin Kharkov National University, 4 Svobody Sq., 61077 Kharkov, Ukraine;cInstitute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov avenue, 1, 142432 Chernogolovka, Russia;dN.S. Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences, 119991, Leninskii avenue, 31 Moscow, Russia;eInstitute of Chemistry, Jan Kochanowski Univerity, 15 G ?wi?tokrzyska street, 25-406 Kielce, Poland |
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| Abstract: | ![]()
An anion-radical salt (ARS) (N-Me-2,5-di-Me-Pz)(TCNQ)2, where Pz is pyrazine, was synthesized and its crystal structure was resolved. X-ray diffraction experiments on single crystals were performed. Heat capacity was measured in the temperature range from 2 to 300 K. Magnetisation and magnetic susceptibility were measured in the temperature range from 2 to 300 K and the low-temperature part was measured in magnetic fields from 5 mT to 5 T. The experimental results were explained in terms of dimerized Heisenberg spin  chain model. Numerical calculations were performed and compared with experimental data. |
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| Keywords: | A. Organic compounds C. X-ray diffraction D. Magnetic properties D. Specific heat |
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