Comprehensive resistivity and Hall effect studies on quasi-one-dimen-sional (TMTTF)2X salts (X=BF4, ReO4, AsF6, SbF6) (CROSBI ID 630662)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa
Podaci o odgovornosti
Löhle, Anja ; Čulo, Matija ; Tafra, Emil ; Mihaljević, Branimir ; Basletić, Mario ; Hamzić, Amir ; Korin-Hamzić, Bojana ; Dressel, Martin
engleski
Comprehensive resistivity and Hall effect studies on quasi-one-dimen-sional (TMTTF)2X salts (X=BF4, ReO4, AsF6, SbF6)
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.
organic conductors; Hall effect; magnetoresistance; dielectric spectroscopy
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Podaci o prilogu
133-133.
2015.
objavljeno
Podaci o matičnoj publikaciji
11th International Symposium on Crystalline Organic Metals, Superconductors and Magnets : book of abstracts
Lang, Michael
Frankfurt: Goethe Universität
Podaci o skupu
11th International Symposium on Crystalline Organic Metals, Superconductors and Magnets (11 ; 2915)
poster
06.09.2015-11.09.2015
Bad Gögging, Njemačka