Massless Fermions in Organic Conductor
By A. Kobayashi, S. Katayama, Y. Suzumura, H. Fukuyama. 2007
164 citations recorded by the source corpus.
The electronic states in two-dimensional organic conductor α-(BEDT-TTF) 2 I 3 have been investigated to show the noticeable property of the massless fermions, i.e., the linear dispersion which exists on the contact point between the conduction band and the valence band. These fermions are well known in bismuth and graphite, where the former are described by the Dirac equation and the latter obeys the Weyl equation corresponding to the massless fermion. In the present study, we show that the effective Hamiltonian describing the massless fermions in α-(BEDT-TTF) 2 I 3 contains intrinsically new terms of Pauli matrices σ z and σ 0 in addition to the Weyl equation which consists of σ x and σ y . The new massless fermions are robust against the charge disproportionation, and induce the anomalous momentum-dependence in the charge density.
Subfields: Electronic, Optical and Magnetic Materials, Organic Chemistry
View Paper: https://www.semanticscholar.org/paper/5f7ccd94808e3b64c54da062b331da0e529c5aa3
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In Electronic, Optical and Magnetic Materials
In Organic Chemistry
Citations in the corpus
- Electronic properties of graphene in a strong magnetic field (2010, background): “…systems such as cold atoms in optical lattices (Hou et al., 2009; Lee et al., 2009; Wunsch et al., 2008; Zhao and Paramekanti, 2006; Zhu et al., 2007), the quasi-2D organic material α−(BEDT-TTF)2I3 (Katayama et al., 2006; Kobayashi et al., 2007) or VO2/TiO2 heterostructures (Banerjee et al., 2009).”
- Novel effects of strains in graphene and other two dimensional materials (2015, background): “This term appears naturally in the description of the two dimensional organic superconductors [183] which are described by anisotropic Dirac fermions.”