Data di Pubblicazione:
2010
Abstract:
EPR and NMR measurements in LixM(Pc,Nc) (M=Zn,Mg; Pc=phthalocyanine, Nc=naphthalocyanine) are presented. The changes of the electronic properties induced by the
substitution of the metal M and by the expansion of the organic core are discussed for the half filling of the conduction band, i.e. for x around 2. The comparison with Li2ZnPc, which behaves
as a Fermi liquid, suggests that the substitution of Zn with Mg does not lead to substantial effects. On the contrary in Li2:2MgNc, where a more two-dimensional packing of the molecules
is attained, a stronger tendency to localization and a low temperature phase transition towards a spin density wave ground state are observed.
substitution of the metal M and by the expansion of the organic core are discussed for the half filling of the conduction band, i.e. for x around 2. The comparison with Li2ZnPc, which behaves
as a Fermi liquid, suggests that the substitution of Zn with Mg does not lead to substantial effects. On the contrary in Li2:2MgNc, where a more two-dimensional packing of the molecules
is attained, a stronger tendency to localization and a low temperature phase transition towards a spin density wave ground state are observed.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
molecular conductors; nuclear magnetic resonance; spin density waves
Elenco autori:
Filibian, Marta; Bordonali, L; Carretta, Pietro; Mozzati, MARIA CRISTINA; Ghigna, Paolo; Klyatskaya, S; Ruben, M.
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