Zeitschriftenartikel:
L. Chizhova, F. Libisch, J. Burgdörfer:
"Nonlinear response of graphene to a few-cycle terahertz laser pulse: Role of doping and disorder";
Physical Review B,
94
(2016),
S. 075412
- 075412-10.
Kurzfassung englisch:
The nonlinear response of graphene to a THz laser pulse is studied by solving the time-dependent Dirac equation and the time-dependent Schrödinger equation within a tight-binding approximation applied to finite-sized structures. We compare predictions of these two approximations for the harmonic spectrum with the recent experiment by P. Bowlan et al. [Phys. Rev. B 89, 041408(R) (2014)]. We highlight the influence of short-range and long-range disorder which can be accounted for within the tight-binding description on a microscopic level. We find good agreement with the experiment. Most notably, the intensity of the second harmonic offers a quantitative indicator for the amount of short-range disorder.
Schlagworte:
Graphene, optical response
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevB.94.075412
Elektronische Version der Publikation:
https://publik.tuwien.ac.at/files/publik_253087.pdf
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.