Aperiodic quantum oscillations of particle-hole asymmetric Dirac cones

E. Tisserond , J. N. Fuchs , M. O. Goerbig , P. Auban-Senzier , C. Meziere , P. Batail , Y. Kawasugi , M. Suda

show 4 more authors

H. M. Yamamoto R. Kato N. Tajima M. Monteverde

Authors on Pith no claims yet

classification ❄️ cond-mat.mes-hall

keywords oscillationsbedt-ttfdiracasymmetricconeconesparticle-holetheoretical

0 comments

read the original abstract

We report experimental measurements and theoretical analysis of Shubnikov-de Haas (SdH) oscillations in a Dirac cone system: the a-(BEDT-TTF)2I3 organic metal under hydrostatic pressure. The measured SdH oscillations reveal anomalies at high magnetic fields B where the 1/B oscillations periodicity is lost above 7 T. We interpret these unusual results within a theoretical model that takes into account intrinsic distortions of the a-(BEDT-TTF)2I3 Dirac cones such as a parabolic particle-hole asymmetric correction. Others possible causes, such as a cone tilting or a Zeeman effect, are carefully ruled out. The observations are consistent among a-(BEDT-TTF)2I3 samples with different Fermi levels.

This paper has not been read by Pith yet.

Aperiodic quantum oscillations of particle-hole asymmetric Dirac cones

discussion (0)