Abstract
The zero-gap state (ZGS) where the conduction and valence bands coincide only at a contact point corresponding to the chemical potential, is theoretically predicted for organic conductor α-(BEDT-TTF) 2 NH 4 Hg(SCN) 4 using the transfer energies obtained from the X-ray experiment by Kondo et al. The ZGS emerges under uniaxial pressure, P c , along the stacking axis, for P c > 5.0 kbar. Our calculation of the Berry curvature confirms that the phase of wave function exhibits the singularity indicating the Dirac electron. The peaks of Berry curvature are highly anisotropic at the ambient pressure, while those become nearly isotropic at high pressure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
