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Inter-Band Effects of Magnetic Field on Hall Conductivity in Multi Layered Massless Dirac Fermion System $\alpha$-(BEDT-TTF)$_2$I$_3$

Authors :
Tajima, N.
Kato, R.
Sugawara, S.
Nishio, Y.
Kajita, K.
Source :
Phys. Rev. B 85, 033401 (2012)
Publication Year :
2012

Abstract

We have discovered two-dimensional zero-gap material with a layered structure in the organic conductor $\alpha$-(BEDT-TTF)$_2$I$_3$ under high hydrostatic pressure. In contrast to graphene, the electron-hole symmetry is not good except at the vicinity of the Dirac points. Thus, temperature dependence of the chemical potential, $\mu$, plays an important role in the transport in this system. The experimental formula of $\mu$ is revealed. We succeeded in detecting the inter-band effects of a magnetic field on the Hall conductivity when $\mu$ passes the Dirac point.<br />Comment: 5 page, 4 figures

Details

Database :
arXiv
Journal :
Phys. Rev. B 85, 033401 (2012)
Publication Type :
Report
Accession number :
edsarx.1201.2728
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevB.85.033401