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TT: Fachverband Tiefe Temperaturen

TT 58: Poster Session Transport & Matter at Low Temperature

TT 58.42: Poster

Donnerstag, 14. März 2013, 15:00–19:00, Poster D

De Haas - van Alphen oscillations in graphene — •Carolin Küppersbusch and Lars Fritz — Institut für Theoretische Physik, Universität zu Köln

De Haas van Alphen oscillations are customarily analyzed using the Lifshitz-Kosevich (LK) formula. This is a phenomenological formula which relates the amplitude of the harmonics to system parameters such as the temperature, disorder strength and the effective mass of the electrons. For systems which can be described within Fermi liquid theory the LK formula holds without modifications when electron-electron interactions are included. The introduction of a renormalized mass is fully effectual. Since graphene cannot be described within Fermi liquid theory for all doping levels, modifications of the LK formula should be expected for this system with electron-electron interactions included. These modifications are investigated.