Magnetotransport properties in purple bronze Li0.9Mo6O17 single crystal
Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China - Hefei, Anhui 230026, PRC
Corresponding author: email@example.com
Accepted: 16 March 2010
We have measured the resistivity along the a, b and c axes in Li0.9Mo6O17 single crystals. The anisotropy ratios / and / are presented, confirming the quasi–one-dimensionality of the compound. Both the sharp decrease in the anisotropy and the sharp increase in the Hall coefficient RH below a certain temperature (TM) indicate potential dimensional crossover. Negative magnetoresistances are observed with magnetic field (H) applied along the b-axis which could be ascribed to the suppression of dimensional crossover. In contrast, large positive magnetoresistance is observed with H applied along the a-axis and the c-axis. While the temperature-dependent resistivity anisotropy indicates dimensional crossover, we find no solid proof for the existence of CDW order by fitting the positive magnetoresistances.
PACS: 71.45.Lr – Charge-density-wave systems / 74.25.F- – Transport properties / 72.20.My – Galvanomagnetic and other magnetotransport effects
© EPLA, 2010