M. O. Goerbig et al 2009 EPL 85 57005 doi:10.1209/0295-5075/85/57005
M. O. Goerbig, J.-N. Fuchs, G. Montambaux and F. Piéchon
Show affiliationsThe relativistic Landau levels in the layered organic material α-(BEDT-TTF)2I3 (BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene) are sensitive to the tilt of the Dirac cones, which, as in the case of graphene, determine the low-energy electronic properties under appropriate pressure. We show that an applied in-plane electric field, which happens to be in competition with the tilt of the cones, lifts the twofold valley degeneracy due to a different level spacing. This scenario may be tested in infrared transmission spectroscopy.
Issue 5 (March 2009)
Received 12 January 2009, accepted for publication 13 February 2009
Published 19 March 2009
M. O. Goerbig et al 2009 EPL 85 57005
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