Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Dávid, Gy."'
Autor:
David, Gy., Cserti, J.
Publikováno v:
Phys. Rev. B 81, 121417(R) (2010)
We derive a general and simple expression for the time-dependence of the position operator of a multi-band Hamiltonian with arbitrary matrix elements depending only on the momentum of the quasi-particle. Our result shows that in such systems the Zitt
Externí odkaz:
http://arxiv.org/abs/0909.2004
Publikováno v:
Phys. Rev. Lett. 99, 066802 (2007)
Using a reformulated Kubo formula we calculate the zero-energy minimal conductivity of bilayer graphene taking into account the small but finite trigonal warping. We find that the conductivity is independent of the strength of the trigonal warping an
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703810