We theoretically study optical Hall conductivities for ABA and ABC trilayer graphenes. In ABA-stacked trilayer, the resonance spectrum is shown to be a superposition of effective monolayer and bilayer contributions with band gaps, while ABC trilayer exhibits a distinct spectrum peculiar to the cubic-dispersed bands with a strong trigonal warping, where we found the signals associated with low-energy Dirac cones are conspicuous enough to be directly observable owing to a large Lifshitz-transition energy (∼ 10 meV). We have also revealed how the presence or absence of the inversion symmetry affects the optical Hall conductivities.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2013 Jan 1|
|Event||20th International Conference on the Application of High Magnetic Fields in Semiconductor Physics, HMF 2012 - Chamonix Mont Blanc, France|
Duration: 2012 Jul 22 → 2012 Jul 27
ASJC Scopus subject areas
- Physics and Astronomy(all)