Nonlocal transport near charge neutrality point in a two-dimensional electron-hole system.
Phys Rev Lett
; 108(22): 226804, 2012 Jun 01.
Article
en En
| MEDLINE
| ID: mdl-23003639
ABSTRACT
Nonlocal resistance is studied in a two-dimensional system with a simultaneous presence of electrons and holes in a 20 nm HgTe quantum well. A large nonlocal electric response is found near the charge neutrality point in the presence of a perpendicular magnetic field. We attribute the observed nonlocality to the edge state transport via counterpropagating chiral modes similar to the quantum spin Hall effect at a zero magnetic field and graphene near a Landau filling factor ν=0.
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01-internacional
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MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2012
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Article
País de afiliación:
Brasil