Coexistence of Dirac and massive carriers in α-(BEDT-TTF)2I3 under hydrostatic pressure

Fabien Navarin (1) , Emilie Tisserond (1) , Pascale Auban-Senzier (1) , Cécile Mézière (2) , Patrick Batail (2) , Claude Pasquier (1) , Miguel Monteverde (1)

1 LPS - Laboratoire de Physique des Solides
2 MOLTECH-Anjou

We present magnetotransport measurements of α-(BEDT-TTF)2I3 crystals under hydrostatic pressure larger than 1.5 GPa where Dirac carriers are present. We show not only the existence of high-mobility Dirac carriers but we also prove exptl. the presence of low-mobility massive carriers, in agreement with band-structure calcns.

Mots clés: Dirac cones; Hall effect; Magnetotransport

Domaines: Chimie

Fabien Navarin, Emilie Tisserond, Pascale Auban-Senzier, Cécile Mézière, Patrick Batail, et al.. Coexistence of Dirac and massive carriers in α-(BEDT-TTF)2I3 under hydrostatic pressure. Physica B: Condensed Matter, 2015, 460, pp.257-259. ⟨10.1016/j.physb.2014.11.084⟩. ⟨hal-01390957⟩