- Tytuł:
- Peierls Instability and Charge-Density-Wave Transport in Fluoranthene and Perylene Radical Cation Salts
- Autorzy:
-
Brütting, W.
Riess, W. - Powiązania:
- https://bibliotekanauki.pl/articles/1933357.pdf
- Data publikacji:
- 1995-04
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.45.Lr
71.30.+h
72.10.Bg
72.80.Le - Opis:
- Fluoranthene and perylene radical cation salts are quasi-one-dimensional conductors, which show a Peierls transition to a charge-density-wave ground state. Radical cation salts with different stoichiometries composed of the aromatic donor molecules fluoranthene (Fa = C$\text{}_{16}$H$\text{}_{10}$) or perylene (Per = C$\text{}_{20}$H$\text{}_{12}$) and the counterion X¯ = PF¯$\text{}_{6}$ were investigated. We find that the temperature dependence of the electrical conductivity and the properties in the charge-density-wave ground state strongly depend on the composition of the crystals. When fluoranthene is replaced by perylene, the Peierls transition is shifted from 180 K to 120 K and the ground state energy gap decreases from values of 120-180 meV to 60-80 meV. In the charge-density-wave ground state the threshold field for nonlinear conductivity varies between 0.1 and 1 V/cm for different systems. Our results indicate that disorder, three-dimensional coupling and commensurability effects play an important role for the transport properties of these systems.
- Źródło:
-
Acta Physica Polonica A; 1995, 87, 4-5; 785-790
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł