Charge distribution in C$_{60}$ crystal doped by electric field

Details Charge distribution in C$_{60}$ crystal doped by electric field Charge distribution in C$_{60}$ crystal doped by electric field

2002-06-15

arxiv.org/abs/cond-mat/0206290v1

Physics

Condensed Matter

Superconductivity

3 pages (RevTex), 2 PS figures (reported at 4th Intern. Conf. on Electronic Processes in Organic Materials, Lviv(Ukraine), Jun

Scientific paper

The calculations of the charge distribution in C$_{60}$-based FET structure are presented. A simple model is proposed to describe the distribution of the injected electrons or holes between two-dimensional layers. The calculations show that the relative charge distribution between the layers turns to be independent on the total amount of injected charges. The charge density is maximal on the surface layer and drops exponentially with the depth increase. The relative amounts of injected charge involved in the top layer are 73 and 64 per cent in the case of electron and hole injection, respectively. Thus, the charge localization on the crystal surface turns to be markedly different from near complete one that was obtained earlier within tight- binding model for the charge concentration providing superconductivity.

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