Synthetic representations of the Poole Frenkel (PF) and Poole regimes

A. Pillonnet , R. Ongaro

A synthetic study of the field-induced ionization of donors is presented in order to bring some insights, usefull to experimentalits, into the Poole and Poole Frenkel (PF) regimes. Emphasis is made on the similarities of some of the fundamental assumptions, as on the artificial character of the hypotheses specific to Poole regime. Some ambiguities dealing with plottings met in literature are also reported. Likewise, discrepancies existing between the authors approaches are put forward, dealing : with the barrier to be overcome by electrons at low and high field strengths ; and with the notion of transition field from one regime to the other. The account concerns essentially Coulomb potentials, though the case of more steeper wells is also evoked. Two block diagrams are built up, supplemented by simulations deduced from Hill's models, with the purpose of clear quantitative delimitation of the ranges of validity of Poole and PF regimes, the latter being eventually assorted with a thermally assisted tunnelling.

Mots clés: Poole Frenkel effect; tunnelling; Poole Frenkel regimes; low field strengths; PF; Poole regimes; synthetic study; field induced ionization; high field strengths; transition field; Coulomb potentials; Hill's models; thermally assisted tunnelling

Domaines: Articles anciens

A. Pillonnet, R. Ongaro. Synthetic representations of the Poole Frenkel (PF) and Poole regimes. Revue de Physique Appliquée, 1990, 25 (2), pp.229-242. ⟨10.1051/rphysap:01990002502022900⟩. ⟨jpa-00246181⟩