Paramagnetic susceptibility of disordered N-methyl-phenazinium tetracyanoquinodimethanide

George Theodorou, Morrel H. Cohen

Research output: Contribution to journalArticlepeer-review

72 Scopus citations


The organic charge-transfer salt N-methyl-phenazinium tetracyanoquinodimethanide is described in terms of a one-dimensional disordered Hubbard model. For low temperatures and small transfer integrals this model reduces to a disordered Heisenberg anti-ferromagnet. The magnetic susceptibility of the latter can be described adequately by the disordered classical Heisenberg model. Fitting of susceptibility data by the one-dimensional classical Heisenberg model provides us with values of t=0.055 eV, Ueff=0.130 eV, and σ=0.136 eV for the parameters of the original Hubbard Hamiltonian.

Original languageEnglish (US)
Pages (from-to)1014-1017
Number of pages4
JournalPhysical review letters
Issue number15
StatePublished - Jan 1 1976
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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