Title
Dirac electrons in a Kronig-Penney potential: dispersion relation and transmission periodic in the strength of the barriers Dirac electrons in a Kronig-Penney potential: dispersion relation and transmission periodic in the strength of the barriers
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : solid state. - Lancaster, Pa, 1970 - 1978
Volume/pages
80(2009) :20 , p. 205415,1-205415,5
ISSN
0556-2805
ISI
000272311400101
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The transmission T and conductance G through one or multiple one-dimensional, ä-function barriers of two-dimensional fermions with a linear energy spectrum are studied. T and G are periodic functions of the strength P of the ä-function barrier V(x,y)/ℏvF=Pä(x). The dispersion relation of a Kronig-Penney (KP) model of a superlattice is also a periodic function of P and causes collimation of an incident electron beam for P=2ðn and n integer. For a KP superlattice with alternating sign of the height of the barriers the Dirac point becomes a Dirac line for P=(n+1/2)ð.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/789c0d/0fce4879.pdf
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