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Anomalous magnetotransport phenomena in θ-(BEDT-TTF)2I3 |
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| Authors: | K Kajita Y Nishio T Takahashi W Sasaki |
| Affiliation: | Department of Physics, Faculty of Science, Toho University, Miyama 2-2-1, Funabashi 274, Japan Department of Chemistry, Faculty of Science, Toho University, Miyama 2-2-1, Funabashi 274, Japan Department of Chemistry, Faculty of Science, The University of Tokyo, Hongo7-3-1, Bunko 113, Tokyo, Japan |
| Abstract: | Anomalous magnetotransport phenomena have been observed in θ-(BEDT-TTF)2I3 crystals at temperatures below 15 K. The magnetoresistance M : (1) is a linear function of the magnetic field H, (2) is not affected by the angle between the electric current and the magnetic field, (3) but depends on the magnetic field orientation with respect to the crystal axis. Magnetoresistance is expressed as M = (aH2a + bH2b + cH2c) 0-3/2/H in terms of H = (Ha, Hb, Hc), the zero field resistivity 0, and parameters a, b, and c which are independent of temperature and magnetic field. We have found that b  a > c. Magnetoresistance up to 40 is observed for H = 7T along the b-axis at T = 1.5K. |
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