1. V.E. Bisti Institute of Solid State Physics RAS, Chernogolovka, Russia N. N. Kirova LPS, Universite Paris Sud, Orsay, France COULOMB INTERACTION AND ELECTRON-HOLE ASYMMETRY IN CYCLOTRON RESONANCE OF BILAYER GRAPHENE IN HIGH MAGNETIC FIELD

2. Asymmetry in bilayer graphene

3. Layer asymmetry Nearest neighbour transitions Layer asymmetry

4. Electron-hole asymmetry Next- nearest neighbour transitions Energy difference between dimer and non-dimer sites

5. Layer asymmetry (red) Layer and e-h asymmetry (black)

6. Landau Levels with electron-hole and layer asymmetry

7. Excitations Integer filling Half-filling

8. Coulomb interaction

9. Cyclotron transitions

10. Cyclotron transitions at lower magnetic fields

11. Cyclotron transitions at higher magnetic fields

12. Symmetric bilayer graphene Monolayer graphene

13. Full-symmetric case (half-filling) – – splitting due to Coulomb interaction Electron-hole asymmetry – no splitting Asymmetric case (low field) – splitting die to electron-hole asymmetry Asymmetric case (high field) – splitting die to Coulomb interaction and layer asymmetry Summary V.E. Bisti, N.N. Kirova. JETP Letters 90, v.2, 2009, 130-133. V.E. Bisti, N.N. Kirova. arXiv: 1102.2638v1, 20011.

14. Monolayer: Independent of H Bilayer: for H=40T

18. Landau Levels with layer asymmetry

19. Asymmetric bilayer