Naslov
Conduction anisotropy and Hall effect in the organic conductor (TMTTF)_2AsF_6: Evidence for Luttinger liquid behavior and charge ordering

Autori
Korin-Hamzić, Bojana ; Tafra, Emil ; Basletić, Mario ; Hamzić, Amir ; Dressel, Martin

Izvornik
Physical Review B (1098-0121) 73 (2006), 11; 5102-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
organic conductors; transport properties; magnetotransport

Sažetak
We present the high-temperature (70 K < T < 300 K) resistivity anisotropy and Hall effect measurements of the quasi-one-dimensional (1D) organic conductor (TMTTF)_2AsF_6. The temperature variations of the resistivity are pronouncedly different for the three different directions, with metalliclike at high temperatures for the a axis only. Above 220 K the Hall coefficient R_H is constant, positive, and strongly enhanced over the expected value ; and the corresponding carrier concentration is almost 100 times lower than calculated for one hole/unit cell. Our results give evidence for the existence of a high-temperature regime above 200 K where the 1D Luttinger liquid features appear in the transport properties. Our measurements also give strong evidence of charge ordering in (TMTTF)_2AsF_6. At the charge-ordering transition T_CO = 100 K, R_H(T) abruptly changes its behavior, switches sign, and rapidly increases with further temperature decrease.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Stranice u časopisu glase: 115102-1 - 115102-7.

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