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2000 | 98 | 6 | 721-727
Article title

Some Mesoscopic Rings: Exact Simulations and Experiment

Content
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Languages of publication
EN
Abstracts
EN
A numerical transfer-matrix approach and an exact diagonalization technique exploiting the point-group symmetry are worked out in the framework of quantum statistical mechanics and group theory for finite rings. They are applied to spin models of the high nuclearity cyclic clusters [Mn(hfac)_{2}NITPh]_{6} and Ni_{12}(O_{2}CMe)_{12}(chp)_{12}(H_{2}O)_{6}(THF)_{6}. The microscopic parameters of both molecules (J/k_{B}=350±10 K and J/k_{B}=8.5 K±0.5, g=2.23±0.01, respectively) are then obtained from a fit of the theoretical susceptibility curves to the experimental results which are supplemented for Ni_{12} by new low-temperature measurements.
Keywords
EN
Publisher

Year
Volume
98
Issue
6
Pages
721-727
Physical description
Dates
published
2000-12
received
2000-07-03
(unknown)
2000-09-25
Contributors
author
  • Computational Physics Division, Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
author
  • Institute of Technology, Pedagogical University in Zielona Góra, Poland
  • Dipartimento di Scienze Fisiche, Università di Napoli "Federico II", Piazzale Tecchio, 80125 Napoli and INFM Unità di Napoli, Italy
author
  • Dipartimento di Scienze Fisiche, Università di Napoli "Federico II", Piazzale Tecchio, 80125 Napoli and INFM Unità di Napoli, Italy
author
  • Dipartimento di Chimica, Università di Firenze, via Maragliano 77, 50144 Firenze, Italy
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv98z606kz
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