Opportunity: Days on hyperconductivity. Sevilla. is a satellite seminar cycle, continuation of one of the topics of the conference NoLineal 2016: international conference on nonlinear mathematics and physics, These days will bring several international speakers, both experimentalists and theoreticians. The frrst talks were are sponsored and administered by the Institute of Mathematics of the University of Sevilla (IMUS) and NoLineal 2016. Thereafter, they were funded by a variety of sources.
Hyperconductivity: term that refers to the transport of charge by a nonlinear wave. One of its relevant characteristics is that charge speed depends weakly on the applied electric field, being largely determined by the nonlinearity of the lattice. Materials for which there is experimental and phenomenological evidence of hyperconductivity can be quite different, two main examples are mica muscovite and polydiacetlyene. A intriguing common property is the effective reduction in one dimension of the propagating media and the existence of a substrate potential due to the rest of the lattice. Experiments are underway in several places including Sevilla.
Organizer: JFR Archilla from the Nonlinear Physics Group (GFNL) of the University of Sevilla
Speakers:
- November 14, 2016, 11h. Seminar of Department of Applied Physics I. ETSII G0.81. Avda Reina Mercedes s/n.
- Yuriy A
Kosevich (Semenov Institute on Chemical
Physics of RAS, Moscow): Charged
ultradiscrete supersonic kinks and discrete breathers in
nonlinear molecular chains with realistic interatomic potentials and electron-phonon interactions (abstract). November 14, 2016, 11h. - Monday, March 6, 2017: 17-19:00h: at IMUS: Seminario I. Avda Reina Mercedes s/n. 41012-Sevilla.
- F. Michael Russell (formerly Rutherford Appleton Laboratory, Didcot, UK, presently collaborating with the University of Sevilla): Theoretical and practical challenges of hyperconductivity above room temperature (abstract and pdf slides).
- Larissa
Brizhik (Prigogine
Gold Medal 2011, Bogolyubov Institute for Theoretical Physics,
Kiev): Soliton
assisted hyperconductivity of low-dimensional
systems: role of electron-phonon
coupling and lattice anharmonicity (abstract and pdf slides) - Thursday, April 20, 2017. 17-18h at IMUS: Seminario I. Avda Reina Mercedes s/n. 41012-Sevilla.
- Guy Wilson (Emeritus Professor of the Center for Condensed Matter and Material Physics, Queen Mary University Collegue London) : Solectrons in polydiacetylene: the ideal one dimensional electronic chain. (abstract).
- Wednesday, May 30, 2018. 11-12h at Seminar Hall of Theoretical Physics. Physics Faculty of the Universidad de Sevilla, Avda Reina Mercedes s/n. 41012-Sevilla.
- Luis A. Cisneros Ake (Departamento de Matemáticas, Escuela Superior de Física y Matemáticas-Instituto Politécnico Nacional (ESFM-IPN), México). Mobile localized solutiono for an electron in lattices with dispersion of Debye and Einstein. (Poster).
- Wednesday, July 11, 2018. 12:15-13:15. Seminar hall of
the Department of Applied Physics I. ETSII: Seminar session on electrons and holes in lattices (poster):
- Juan F.R. Archilla (Group of Nonlinear Physics. Universidad de Sevilla). A model for charge transfer in mica muscovite.
- Yuriy A Kosevich (Semenov Institute on Chemical Physics of RAS, Moscow). Revisited models for charge transport from Holstein and Davydov to Su-Schrieffer-Heeger.