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2009 | 7 | 2 | 211-214
Tytuł artykułu

Single-ion anisotropy in a four-spin system: mixing of S-states

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A four-spin system with s=1 and the single-ion anisotropy, D∑ j [s jz ] 2 , is considered. When D≠0 the Hamiltonian of the system does not commute with S 2 and, therefore, S cannot be used as an additional label of energy levels. In this work we concentrate on the problem of mixing states with different total spins S. The Hamiltonian matrix is transformed to the symmetry-adapted basis (with subspaces labeled by the irreducible representations of the symmetry group) and next, after solving the eigenproblem for S 2, to the basis with vectors labeled by S. Each eigenproblem is solved exactly (at least numerically) and the eigenstates are expressed as ∑S a S ¦S〉. The coefficients aS are analyzed, especially for their D-dependence. Even in such a small system different schemes of level mixing can be observed. [...]
Wydawca

Czasopismo
Rocznik
Tom
7
Numer
2
Strony
211-214
Opis fizyczny
Daty
wydano
2009-06-01
online
2009-04-09
Twórcy
  • Faculty of Physics, Adam Mickiewicz University, 61-614, Poznan, Poland, florek@amu.edu.pl
  • Faculty of Physics, Adam Mickiewicz University, 61-614, Poznan, Poland
  • Faculty of Physics, Adam Mickiewicz University, 61-614, Poznan, Poland
  • Faculty of Physics, Adam Mickiewicz University, 61-614, Poznan, Poland
Bibliografia
  • [1] A. Caneschi, D. Gatteschi, R. Sessoli, A.-L. Barra, L.C. Brunel, M. Guillot, J. Am. Chem. Soc. 113, 5873 (1991) http://dx.doi.org/10.1021/ja00015a057[Crossref]
  • [2] D. Gatteschi, R. Sessoli, Angew. Chem. Int. Ed. 42, 268 (2003) http://dx.doi.org/10.1002/anie.200390099[Crossref]
  • [3] A. Caneschi et al., J. Magn. Magn. Mater. 200, 182 (1999) http://dx.doi.org/10.1016/S0304-8853(99)00408-4[Crossref]
  • [4] A. Scuiller, T. Mallah, M. Verdaguer, A. Nivorozkhin, J.-L. Tholence, P. Veillet, New J. Chem. 20, 1 (1996)
  • [5] J. van Slageren et al., Chem. Eur. J. 8, 277 (2002) http://dx.doi.org/10.1002/1521-3765(20020104)8:1<277::AID-CHEM277>3.0.CO;2-D[Crossref]
  • [6] H. Andres et al., Chem. Eur. J. 8, 4867 (2002) http://dx.doi.org/10.1002/1521-3765(20021104)8:21<4867::AID-CHEM4867>3.0.CO;2-R[Crossref]
  • [7] G. Kamieniarz et al., Inorg. Chim. Acta 361, 3690 (2008) http://dx.doi.org/10.1016/j.ica.2008.03.106[Crossref]
  • [8] C. Raghu, I. Rudra, D. Sen, S. Ramasesha, Phys. Rev. B 64, 064419 (2001) http://dx.doi.org/10.1103/PhysRevB.64.064419[Crossref]
  • [9] I. Rudra, S. Ramasesha, D. Sen, Phys. Rev. B 66, 014441 (2002) http://dx.doi.org/10.1103/PhysRevB.66.014441[Crossref]
  • [10] N. Regnault, T. Jolicoeur, R. Sessoli, D. Gatteschi, M. Verdaguer, Phys. Rev. B 66, 054490 (2002) http://dx.doi.org/10.1103/PhysRevB.66.054409[Crossref]
  • [11] W. Florek, Comp. Phys. Commun. 138, 264 (2001) and the references quoted therein http://dx.doi.org/10.1016/S0010-4655(01)00240-5[Crossref]
  • [12] K. Mitsumoto, S. Koizumi, T. Shiga, H. Nishikawa, Y. Chi, H. Oshio, Chem. Lett. 36 1154 (2006) http://dx.doi.org/10.1246/cl.2007.1154[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-008-0103-7
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