Artículo
Hyperconductivity in fluorphlogopite at 300 K and 1.1 T
Autor/es | Russell, F. Michael
Russell, Mark W. Archilla, Juan F. R. |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada I |
Fecha de publicación | 2019-07-26 |
Fecha de depósito | 2020-12-21 |
Publicado en |
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Resumen | We report on studies of hyperconductivity in which electric charge moves in a solid
in the absence of an applied electric field. This is indicative of a non-Ohmic mechanism. Our
results are consistent with charge being ... We report on studies of hyperconductivity in which electric charge moves in a solid in the absence of an applied electric field. This is indicative of a non-Ohmic mechanism. Our results are consistent with charge being carried ballistically by mobile nonlinear lattice excitations called quodons moving along close-packed atomic chains in the cation layers of some silicates. The finding that quodons can trap and carry a charge was first found by the authors in muscovite (Russell F. M. et al., EPL, 120 (2017) 46001), which previously was not possible. In this paper we have also found hyperconductivity in lepidolite, phlogopite and synthetic fluorphlogopite but not in biotite or quartz. We have found that a current continues to flow for many seconds after the creation of quodons is stopped, indicating they have long flight-paths. This shows that quodons are decoupled from phonons, must experience elastic reflection at boundaries and are not stopped by inevitable dislocations or other minor defects. We have also found that quodons can anneal defects caused by mechanical working of crystal faces. The current carried by quodons is unaffected by a magnetic field of 1.1 T. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía |
Identificador del proyecto | PRX18/00360
FIS2015-65998- C2-2-P 2017/FQM-280 |
Cita | Russell, F.M., Russell, M.W. y Archilla, J.F.R. (2019). Hyperconductivity in fluorphlogopite at 300 K and 1.1 T. EPL (Europhysics Letters), 127 (16001), 1-7. |
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