Pressure effects on Dirac fermions in α-(BEDT-TTF)2I3

Abstract

We investigate the pressure effect on the layered Dirac fermion system, which is realized in quasi-two-dimensional organic compound α-(BEDT-TTF)2I3. The trajectory of the contact points is investigated using the tight-binding model with the transfer integrals determined by X-ray diffraction experiments. Vanishing of the Dirac fermion spectrum, opening of the gap, and pressure dependence of inter-layer magnetoresistance are discussed.

18 pages, 7 figures, Proceedings of the International Conference on Conducting Materials (ICoCoM2010) in Sousse, Tunisia, Nov 3-7 2010, submitted to Journal of Physics: Condensed Matter

References in corpus (6)

• Electric Field Effect in Atomically Thin Carbon Films
• Tilted anisotropic Dirac cones in quinoid-type graphene and alpha-(BEDT-TTF)_2I_3
• Merging of Dirac points in a two-dimensional crystal
• A universal Hamiltonian for the motion and the merging of Dirac cones in a two-dimensional crystal
• Effects of the Zero-Mode Landau Level on Inter-Layer Magnetoresistance in Multilayer Massless Dirac Fermion Systems
• Possible Verification of Tilted Anisotropic Dirac Cone in α-(BEDT-TTF)_2 I_3 Using Interlayer Magnetoresistance

Cited by in corpus (3)

• Magnetoplasmons of the tilted-anisotropic Dirac cone material $\alpha -$(BEDT-TTF)${}_2$I${}_3$
• Electric field-induced valley degeneracy lifting in uniaxial strained graphene: evidence from magnetophonon resonance
• Interlayer magnetoresistance in multilayer Dirac electron systems: motion and merging of Dirac cones