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Pregled bibliografske jedinice broj: 790406

Comprehensive resistivity and Hall effect studies on quasi-one-dimen-sional (TMTTF)2X salts (X=BF4, ReO4, AsF6, SbF6)


Löhle, Anja; Čulo, Matija; Tafra, Emil; Mihaljević, Branimir; Basletić, Mario; Hamzić, Amir; Korin-Hamzić, Bojana; Dressel, Martin
Comprehensive resistivity and Hall effect studies on quasi-one-dimen-sional (TMTTF)2X salts (X=BF4, ReO4, AsF6, SbF6) // 11th International Symposium on Crystalline Organic Metals, Superconductors and Magnets : book of abstracts / Lang, Michael (ur.).
Frankfurt: Goethe Universität, 2015. str. 133-133 (poster, nije recenziran, sažetak, znanstveni)


Naslov
Comprehensive resistivity and Hall effect studies on quasi-one-dimen-sional (TMTTF)2X salts (X=BF4, ReO4, AsF6, SbF6)

Autori
Löhle, Anja ; Čulo, Matija ; Tafra, Emil ; Mihaljević, Branimir ; Basletić, Mario ; Hamzić, Amir ; Korin-Hamzić, Bojana ; Dressel, Martin

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
11th International Symposium on Crystalline Organic Metals, Superconductors and Magnets : book of abstracts / Lang, Michael - Frankfurt : Goethe Universität, 2015, 133-133

Skup
11th International Symposium on Crystalline Organic Metals, Superconductors and Magnets (11 ; 2915)

Mjesto i datum
Bad Goegging, Njemačka, 06-11.09.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Organic conductors; Hall effect; magnetoresistance; dielectric spectroscopy

Sažetak
Upon cooling the highly anisotropic organic conductors (TMTTF) 2 X undergo transitions to various ordered states in the charge and spin degrees of freedom and therefore turn out to be an excellent choice for exploring the phenomena of low-dimensional physics. In order to study the transport mechanism of these quasi-one-dimensional (1D) organic salts, the temperature-dependent Hall effect of (TMTTF) 2 X (X=BF 4 , ReO 4 , AsF 6 , SbF 6 ) has been measured by an AC compensation technique with current injection along the high-conducting a-axis. At elevated temperatures the Hall coefficient R H of all investigated compounds seems to be constant, positive and somehow enhanced compared to the calculated value for one hole per unit cell. Beyond the charge order phase transition the Hall coefficient follows similar exponential laws as the resistivity data. This indicates the behavior of a semiconductor, where the change in ρ(T) mainly originates from the change in the number of carriers. Here we discuss how the Hall coefficient is influenced by anisotropy, localization effects, anion symmetry and charge- as well as anion-ordering phenomena at low temperatures. We compare the results to resistivity studies and theoretical expectations.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-1011 - Jako korelirani elektroni u slojnim organskim materijalima i manganitima: niskofrekventna pobuđenja i nelinearna dinamika (Silvia Tomić, )

Ustanove
Institut za fiziku, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb