Modulation doping and observation of the integral quantum Hall effect in PbTe/Pb1− x Eu x Te multiquantum wells
1993; American Institute of Physics; Volume: 63; Issue: 21 Linguagem: Inglês
10.1063/1.110269
ISSN1520-8842
AutoresG. Springholz, G. Ihninger, G. Bauer, M. M. Olver, J. Pastalan, Suzanne Romaine, Bennett B. Goldberg,
Tópico(s)Topological Materials and Phenomena
ResumoIn Pb1−xEuxTe layers grown by molecular beam epitaxy a drastic reduction of electron mobility is observed for increasing Eu content. This is exploited for the investigation of the electronic properties of the two-dimensional electron gas in PbTe/Pb1−xEuxTe quantum wells (x=4.7%). In such structures we report the observation of the integer quantum Hall effect with a dominance of the odd filling factors due to the large spin splitting in the lead salts.
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