ELFT HÍRADÓ

[Andras Palyi <andraspalyi AT caesar.elte.hu>]

Kedves Kollegak!

December 1-en csutortokon Dr. Mark Rudner (Harvard University, USA)  
tart szeminariumi eloadast az ELTE Fizikai Intezeteben

"Transport phenomena in graphene nanojunctions"

cimmel.

Kivonat:
The discovery of graphene, a truly 2D material, opened many intriguing  
avenues for studying electronic transport phenomena.  First, due to  
the gapless, chiral nature of charge carriers, graphene devices  
provide tabletop means to study quasi-relativistic phenomena such as  
Klein tunneling, which were originally studied in the context of high  
energy physics but could not be easily investigated in experiments.   
Furthermore,  due to its exposed electronic states, graphene can be  
gated on length scales much shorter than in conventional 2D electron  
gas devices based on semiconductor heterostructures.  Combined with  
high carrier mobility, this allows ballistic transport phenomena to be  
studied on previously inaccessible length scales.  In this talk I will  
summarize our recent theoretical work on electronic transport in gated  
graphene structures, focusing on signatures of Klein tunneling in the  
Fabry-Perot resonances and chirality-assisted confinement and  
"cloaking" of electronic states in monolayer and bilayer graphene pnp  
junctions, respectively, and 3) Landau level collapse in strong  
electric fields near potential barriers.  I will describe these  
phenomena, their experimental signatures, and discuss relevant  
experimental data where available.

Idopont: december 1. csutortok, 10:15
Hely: Pazmány Peter setany 1/A (Lagymanyosi kampusz, eszaki epulet)  
4.70-es terem
(Anyagfizikai Tanszek tanacsterme)

Vendegeket szivesen latunk.

Udvozlettel,
Palyi Andras