Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 78, Issue 2, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.78.023704
Keywords
alpha-(BEDT-TTF)(2)I-3; Dirac cone; magnetoresistance
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan
- Global COE Program
- Yukawa Institute for Theoretical Physics
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It is proposed that the presence of a tilted and anisotropic Dirac cone can be verified using the interlayer magnetoresistance in the layered Dirac fermion system, which is realized in quasi-two-dimensional organic compound alpha-(BEDT-TTF)(2)I-3. Theoretical formula for the interlayer magneto-resistance is derived using the analytic Landau level wave functions and assuming local tunneling of electrons. It is shown that the resistivity as a function of the azimuthal angle of the magnetic field takes the maximum in the direction of the tilt if anisotropy of the Fermi velocity of the Dirac cone is small. The procedure is described to determine the parameters of the tilt and anisotropy.
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