Dirac Tunneling
Dirac Tunneling
This Demonstration shows the tunneling through a barrier of height and width by a Dirac fermion of mass and energy . The upper two Argand plots show the weight of the reflected and transmitted waves (red: , green: -m<E<+m, and blue: ). The lower plot shows the reflection coefficient (blue) and transmission coefficient (red). The gray area is where . The increase in the transmitted wave after tunneling is a consequence of the Klein paradox.
V
0
Δz
m
E
0<E<-m
V
0
V
0
V
0
E>+m
V
0
E-m<<E+m
V
0