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Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics
Physical review B: Condensed matter and materials physics, 82 (2010), 16; 165205. https://doi.org/10.1103/PhysRevB.82.165205
Jurić, Ivan; Batistić, Ivo; Tutiš, Eduard

Institucijski repozitorij: Repozitorij Prirodoslovno-matematičkog fakulteta

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Jurić, I., Batistić, I. i Tutiš, E. (2010). Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics. Physical review B: Condensed matter and materials physics, 82. (16). doi: 10.1103/PhysRevB.82.165205

Jurić, Ivan, et al. "Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics." Physical review B: Condensed matter and materials physics, vol. 82, br. 16, 2010. https://doi.org/10.1103/PhysRevB.82.165205

Jurić, Ivan, Ivo Batistić i Eduard Tutiš. "Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics." Physical review B: Condensed matter and materials physics 82, br. 16 (2010). https://doi.org/10.1103/PhysRevB.82.165205

Jurić, I., Batistić, I. i Tutiš, E. (2010) 'Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics', Physical review B: Condensed matter and materials physics, 82(16). doi: 10.1103/PhysRevB.82.165205

Jurić I, Batistić I, Tutiš E. Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics. Physical review B: Condensed matter and materials physics [Internet]. 2010. [pristupljeno 11.01.2025.];82(16). doi: 10.1103/PhysRevB.82.165205

I. Jurić, I. Batistić i E. Tutiš, "Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics", Physical review B: Condensed matter and materials physics, vol. 82, br. 16, 2010. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:097726. [Citirano: 11.01.2025.]

Za citiranje koristite ovu mrežnu adresu: https://urn.nsk.hr/urn:nbn:hr:217:097726
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Naslov (engleski)Beyond the effective temperature: The electron ensemble at high electric fields in disordered organics
AutorIvan Jurić
AutorIvo Batistić
AutorEduard Tutiš
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Sažetak (engleski)
Hopping between localized polaronic states, with a Gaussian distribution in energy, is regarded as the main mechanism of electric conduction in disordered organics. Several authors have recently suggested that the hopping electrons, subjected to an electric field, can be described as a homogeneous ‘overheated’ gas, with its “effective temperature” sufficient for a parametrization of the ensemble and the current. It is not clear how such a picture could be reconciled with the observed strongly oriented filamentization of the flow. We show, through extensive numeric simulations, that the picture is misleading as it can overestimate the electron mobility by orders of magnitude. The reason lies in deviations of the average site occupancies from the effective Boltzmann distribution. The ensemble can be described by a distribution function with two parameters—the effective temperature and the variance of the occupancy deviations. The two are connected by a simple universal relation. The spatial structure of the occupancy deviations is found to be connected to the current filaments and its neglect is recognized as the cause for the failure of mobility calculations based on the overheated gas concept. Thus we identify those aspects, lying beyond the overheated gas picture, that are of a fundamental importance to a proper understanding of the transport in disordered organics.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaPhysical review B: Condensed matter and materials physics
Brojčani podacivol. 82, br. 16, 165205
p-ISSN1098-0121
e-ISSN1550-235X
DOIhttps://doi.org/10.1103/PhysRevB.82.165205
URN:NBNurn:nbn:hr:217:097726
Datum objave publikacije2010
ProjektŠifra: 035-0352826-2847
Naziv (hrvatski): Modeliranje fizikalnih svojstava materijala s izraženom frustracijom ili neredom
Voditelj: Eduard Tutiš
Pravna nadležnost: Hrvatska
Financijer: MZOS
Linija financiranja: ZP
URL dokumentahttp://link.aps.org/doi/10.1103/PhysRevB.82.165205
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Javna napomenaCopyright (2010) by the American Physical Society. Received 26 August 2010; published 29 October 2010.
Datum i vrijeme pohrane2019-11-03 16:48:29