Propagation of acoustic edge waves in graphene under quantum Hall effect
Artikel i vetenskaplig tidskrift, 2015

We consider a graphene sheet with a zigzag edge subject to a perpendicular magnetic field and investigate the propagation of in-plane acoustic edge waves. In particular it is shown that propagation is significantly blocked for certain frequencies defined by the resonant absorption due to electronic-acoustic interaction. We study absorption of acoustic energy as a function of magnetic field and find that, for a finite gate voltage and fixed acoustic frequency, tuning the magnetic field may bring the system through a number of electronic resonances. We suggest that the strong interaction between the acoustic and electronic edge states in graphene may generate significant nonlinear effects leading to the existence of acoustic solitons in such systems.

graphene

wave functions

Dirac-Fermions

Fermi levels

Författare

Anton Vikström

Chalmers, Teknisk fysik, Kondenserade materiens teori

Low Temperature Physics

1063-777X (ISSN) 1090-6517 (eISSN)

Vol. 41 293-299 1.4916074

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1063/1.4916074