On the propagation of Dirac fermions in graphene with strain-induced inhomogeneous Fermi velocity

0524521 - ÚJF 2021 RIV GB eng J - Článek v odborném periodiku
Contreras-Astorga, A. - Jakubský, Vít - Raya, A.
On the propagation of Dirac fermions in graphene with strain-induced inhomogeneous Fermi velocity.
Journal of Physics-Condensed Matter. Roč. 32, č. 29 (2020), č. článku 295301. ISSN 0953-8984. E-ISSN 1361-648X
Grant CEP: GA ČR GA19-07117S
Institucionální podpora: RVO:61389005
Klíčová slova: graphene * 2D materials * deflection * wave packets * bound states * mechanical deformations * inhomogenous Fermi velocity
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.333, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1088/1361-648X/ab7e5b

We consider systems described by a two-dimensional Dirac equation where the Fermi velocity is inhomogeneous as a consequence of mechanical deformations. We show that the mechanical deformations can lead to deflection and focusing of the wave packets. The analogy with known reflectionless quantum systems is pointed out. Furthermore, with the use of the qualitative spectral analysis, we discuss how inhomogeneous strains can be used to create waveguides for valley polarized transport of partially dispersionless wave packets.
Trvalý link: http://hdl.handle.net/11104/0308869