Exponential decay of spin-spin correlation between distant defect states produced by contour hydrogenation of polycyclic aromatic hydrocarbon molecules

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Exponential decay of spin-spin correlation between distant defect states produced by contour hydrogenation of polycyclic aromatic hydrocarbon molecules

The first few low-lying spin states of alternant polycyclic aromatic hydrocarbon (PAH) molecules of several shapes showing defect states induced by contour hydrogenation have been studied both by ab initio methods and by a precise numerical solution of Pariser-Parr-Pople (PPP) interacting model. In accordance with Lieb’s theorem, the ground state shows a spin multiplicity equal to one for balan...

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ژورنال

عنوان ژورنال: Physical Review B

سال: 2013

ISSN: 1098-0121,1550-235X

DOI: 10.1103/physrevb.87.125126