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Title
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Dirac electrons in a Kronig-Penney potential: dispersion relation and transmission periodic in the strength of the barriers
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Author
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Physical review : B : solid state. - Lancaster, Pa, 1970 - 1978
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Publication
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Lancaster, Pa
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2009
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ISSN
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0556-2805
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DOI
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10.1103/PHYSREVB.80.205415
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Volume/pages
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80
:20
(2009)
, p. 205415,1-205415,5
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ISI
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000272311400101
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Full text (Publisher's DOI)
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Full text (open access)
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