2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228839We report on the experimental results of interlayer magnetoresistance in multilayer massless Dirac fermion system $α$-(BEDT-TTF)$_2$I$_3$ under hydrostatic pressure and its interpretation. We succeeded in detecting the zero-mode Landau level (n=0 Landau level) that is epected to appear at the contact points of Dirac cones in the magnetic field normal to the two-dimensional plane. The characteristic feature of zero-mode Landau carriers including the Zeeman effect is clearly seen in the interlayer magnetoresistance.2 pages, 2 figuresMaterials ScienceOther Condensed Mattertext