Chiral Tunneling and the Klein Paradox in Graphene

​
V
0
160
D
100
This plot shows the transmission coefficient for a barrier of height
V
0
in graphene as a function of the angle of a plane wave incident on the barrier.

Details

This is a minor generalization of the plot shown in Fig. 2a of[1]. It shows the transmission coefficient for a plane wave incident on a barrier of height
V
0
. The parameters for graphene given in that paper have been used: Dirac speed
ℏ
v
F
=660meVnm
, energy
E=80meV
, Fermi momentum
k
F
=2π/50
-1
nm
; the width of barrier
D
ranges from
50-200nm
and
V
0
lies between
81-380meV
.
M. I. Katsnelson, K. S. Novoselov, and A. K. Geim, "Chiral Tunneling and the Klein Paradox in Graphene," Nature Phys., 2, 2006 pp. 620–625.

External Links

Tunneling (ScienceWorld)

Permanent Citation

Niels Walet
​
​"Chiral Tunneling and the Klein Paradox in Graphene"​
​http://demonstrations.wolfram.com/ChiralTunnelingAndTheKleinParadoxInGraphene/​
​Wolfram Demonstrations Project​
​Published: March 7, 2011