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arXiv · 2304.10069

Observations of $\nu=1$ Quantum Hall Effect and Inter-Band Effects of Magnetic fields on Hall Conductivity in Organic Massless Dirac Fermion System $\alpha$-(BETS)$_2$I$_3$ under Pressure

K. Iwata·A. Koshiba·Y. Kawasugi·R. Kato·N. Tajima
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Abstract

We investigated the magnetoresistance and the Hall effect in an organic massless Dirac fermion system $\alpha$-(BETS)$_2$I$_3$ under pressure. The Fermi energy of this system is slightly far away from the Dirac points, and thus the $\nu =1$ quantum Hall state is realized in a low magnetic field at low temperatures. Moreover, the experimental formula for chemical potential as a function of temperature is clarified. We succeeded in detecting the inter-band effects of the magnetic field on the Hall conductivity when the chemical potential passes the Dirac points.

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K. Iwata, A. Koshiba, Y. Kawasugi, R. Kato, N. Tajima. 2023-04-20. Observations of $\nu=1$ Quantum Hall Effect and Inter-Band Effects of Magnetic fields on Hall Conductivity in Organic Massless Dirac Fermion System $\alpha$-(BETS)$_2$I$_3$ under Pressure. https://doi.org/10.7566/jpsj.92.053701

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