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Anharmonicity and its significance to non-Ohmic electric conduction

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Makarov, Valeri A. and Velarde, Manuel G. and Chetverikov, Alexander and Ebeling, Werner (2006) Anharmonicity and its significance to non-Ohmic electric conduction. Physical Review E, 73 (6). ISSN 1539-3755

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Official URL: http://pre.aps.org/abstract/PRE/v73/i6/e066626


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Abstract

We provide here a thorough analysis of the interplay between anharmonic lattice dynamics (with exponential repulsion between units) and electric conduction in a driven-dissipative electrically charged one-dimensional system. First, we delineate the ranges of parameter values where, respectively, subsonic and supersonic wave solitons are possible along the lattice. Then, we study the consequences of the soliton-mediated coupling of light negative to heavy positive charges (lattice units). In the presence of an external electric field we obtain the current-field characteristics for a wide range of values of all parameters defining the system. Finally, we discuss the conditions for an Ohmic-non-Ohmic transition of the electric current as the electric field strength is varied.


Item Type:Article
Uncontrolled Keywords:High-density; Dissipative solitons; Toda-lattices; Oscillations; Excitations; Transport; Proteins; Polymers; Currents; Helium
Subjects:Medical sciences > Biology > Biomathematics
ID Code:16774
Deposited On:19 Oct 2012 08:13
Last Modified:20 Feb 2019 10:39

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