ELFT HÍRADÓ

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

Az ELTE Nanofizika Szeminarium jovo hetfoi eloadasa:

Rakyta Péter: Electronic standing waves on the surface of the  
topological insulator Bi2Te3

Helyszin: ELTE Eszaki Tomb, 5.55-os terem (1117 Budapest, Pazmany  
Peter setany 1/A),
Idopont: 2012. november 26. hetfo, 10:15

Kivonat:
"A line defect on a metallic surface induces standing waves in the  
electronic local density of states (LDOS). Asymptotically far from the  
defect, the wave number of the LDOS oscillations at the Fermi energy  
is usually equal to the distance between nesting segments of the Fermi  
contour, and the envelope of the LDOS oscillations shows a power-law  
decay as moving away from the line defect. Here, we theoretically  
analyze the LDOS oscillations close to a line defect on the surface of  
the topological insulator Bi2Te3, and identify an important pre- 
asymptotic contribution with wave number and decay characteristics  
markedly different from the asymptotic contributions. Wave numbers  
characterizing the pre-asymptotic LDOS oscillations are in good  
agreement with recent data from scanning tunneling microscopy  
experiments [Phys. Rev. Lett. 104, 016401 (2010)].

Reference: P. Rakyta et al., Phys. Rev. B 86, 085456 (2012), http://link.aps.org/doi/10.1103/PhysRevB.86.085456 
"

Minden erdeklodot szivesen latunk.

A szeminarium tovabbi programja: 
http://wigner.elte.hu/koltai/science/?q=seminar

Udvozlettel,
Palyi Andras