TITLE

Galvanomagnetic properties of lead-telluride quantum wells

AUTHOR(S)
Heremans, J.; Partin, D. L.; Dresselhaus, P. D.; Shayegan, M.; Drew, H. D.
PUB. DATE
April 1986
SOURCE
Applied Physics Letters;4/7/1986, Vol. 48 Issue 14, p928
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The first in-plane galvanomagnetic measurements on PbTe quantum wells are presented. The samples were 70-Å-wide wells sandwiched between lattice-matched PbEuSeTe layers which have 500 meV gaps. PbTe has a 187 meV gap at 0 K. The magnetoresistance and Hall effect were measured from 0 to 22 T and 0.5 to 300 K. The results can be explained if we assume that the wells are modulation doped p type to 3.7×1013 cm-2, and that there are 3×1012 cm-2 highly mobile holes which show Shubnikov–de Haas oscillations due to the splitting of size-quantized subbands into Landau levels. The influence of illumination is also shown: up to 1014 cm-2 carriers with a lifetime of the order of 102 min can be photoexcited in the structure.
ACCESSION #
9819490

 

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