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Scientific paper - Original scientific paper
Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties
Physical Review B, 96 (2017), 7; 075141. https://doi.org/10.1103/PhysRevB.96.075141
Ivek, Tomislav; Čulo, Matija; Kuveždić, Marko; Tutiš, Eduard; Basletić, Mario; Mihaljević, Branimir; Tafra, Emil; Tomić, Silvia; Löhle, Anja; Dressel, Martin; Schweitzer, Dieter; Korin-Hamzić, Bojana

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Ivek, T., Čulo, M., Kuveždić, M., Tutiš, E., Basletić, M., Mihaljević, B. ... Korin Hamzić, B. (2017). Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties. Physical Review B, 96. (7). doi: 10.1103/PhysRevB.96.075141

Ivek, Tomislav, et al. "Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties." Physical Review B, vol. 96, no. 7, 2017. https://doi.org/10.1103/PhysRevB.96.075141

Ivek, Tomislav, Matija Čulo, Marko Kuveždić, Eduard Tutiš, Mario Basletić, Branimir Mihaljević, Emil Tafra, et al. "Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties." Physical Review B 96, no. 7 (2017). https://doi.org/10.1103/PhysRevB.96.075141

Ivek, T., et al. (2017) 'Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties', Physical Review B, 96(7). doi: 10.1103/PhysRevB.96.075141

Ivek T, Čulo M, Kuveždić M, Tutiš E, Basletić M, Mihaljević B, and sur.. Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties. Physical Review B [Internet]. 2017 [cited 2024 November 29];96(7). doi: 10.1103/PhysRevB.96.075141

T. Ivek, et al., "Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties", Physical Review B, vol. 96, no. 7, 2017. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:056541. [Accessed: 29 November 2024]

Metadata
Title (english)Semimetallic and charge-ordered α-(BEDT-TTF)2I3: On the role of disorder in dc transport and dielectric properties
AuthorTomislav Ivek
MBZ: 261996
AuthorMatija Čulo
MBZ: 315094
AuthorMarko Kuveždić
MBZ: 352683
AuthorEduard Tutiš
MBZ: 18035
AuthorMario Basletić
MBZ: 197593
AuthorBranimir Mihaljević
AuthorEmil Tafra
MBZ: 248700
AuthorSilvia Tomić
MBZ: 65594
AuthorAnja Löhle
AuthorMartin Dressel
AuthorDieter Schweitzer
AuthorBojana Korin-Hamzić
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
α-(BEDT-TTF)2I3 is a prominent example of charge ordering among organic conductors. In this work, we explore the details of transport within the charge-ordered as well as semimetallic phase at ambient pressure. In the high-temperature semimetallic phase, the mobilities and concentrations of both electrons and holes conspire in such a way to create an almost temperature-independent conductivity as well as a low Hall effect. We explain these phenomena as a consequence of a predominantly interpocket scattering which equalizes mobilities of the two types of charge carriers. At low temperatures, within the insulating charge-ordered phase two channels of conduction can be discerned: a temperature-dependent activation, which follows the mean-field behavior, and a nearest-neighbor-hopping contribution. Together with negative magnetoresistance, the latter relies on the presence of disorder. The charge-ordered phase also features a prominent dielectric peak which bears a similarity to relaxor ferroelectrics. Its dispersion is determined by free-electron screening and pushed by disorder well below the transition temperature. The source of this disorder can be found in the anion layers which randomly perturb BEDT-TTF molecules through hydrogen bonds.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review B
Numberingvol. 96, no. 7, 075141
p-ISSN2469-9950
e-ISSN2469-9969
DOIhttps://doi.org/10.1103/PhysRevB.96.075141
URN:NBNurn:nbn:hr:217:056541
Publication2017
ProjectNumber: IP-2013-11-1011
Title (croatian): Jako korelirani elektroni u slojnim organskim materijalima i manganitima: niskofrekventna pobuđenja i nelinearna dinamika
Acronym: SCEinLOM
Leader: Silvia Tomić
Jurisdiction: Croatia
Funding stream: IP
Document URLhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.075141
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2017 American Physical Society. Received 8 March 2017. Revised manuscript received 11 July 2017. Published 21 August 2017.
Created on2020-02-29 18:42:33