Galvanomagnetic properties of lead-telluride quantum wells

J. Heremans, D. L. Partin, P. D. Dresselhaus, M. Shayegan, H. D. Drew

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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 10 2 min can be photoexcited in the structure.

Original languageEnglish (US)
Pages (from-to)928-930
Number of pages3
JournalApplied Physics Letters
Volume48
Issue number14
DOIs
StatePublished - Dec 1 1986

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Heremans, J., Partin, D. L., Dresselhaus, P. D., Shayegan, M., & Drew, H. D. (1986). Galvanomagnetic properties of lead-telluride quantum wells. Applied Physics Letters, 48(14), 928-930. https://doi.org/10.1063/1.96661