Quantization of the Hall conductivity well beyond the adiabatic limit in pulsed magnetic fields.
Phys Rev Lett
; 86(24): 5566-9, 2001 Jun 11.
Article
em En
| MEDLINE
| ID: mdl-11415302
ABSTRACT
We measure the Hall conductivity, sigma(xy), on a Corbino geometry sample of a high-mobility AlGaAs/GaAs heterostructure in a pulsed magnetic field. At a bath temperature about 80 mK, we observe well expressed plateaux in sigma(xy) at integer filling factors. In the pulsed magnetic field, the Laughlin condition of the phase coherence of the electron wave functions is strongly violated and, hence, is not crucial for sigma(xy) quantization.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Federação Russa