Shubnikov—de Haas Oscillations in a Semiconductor Superlattice

L. L. Chang; H. Sakaki; C. A. Chang; L. Esaki

doi:10.1103/PhysRevLett.38.1489

Shubnikov—de Haas Oscillations in a Semiconductor Superlattice

L. L. Chang, H. Sakaki, C. A. Chang, and L. Esaki

Phys. Rev. Lett. 38, 1489 – Published 20 June 1977

Abstract

We have observed Shubnikov—de Haas oscillations associated with the quantum sub-bands created in superlattices made of periodic layers of GaAs and ${Ga}_{1 - x} {Al}_{x} As$ . By controlling the periodic potential profile, a variety of sample with sub-bands of different degrees of two-dimensionality have been prepared for investigation. The observed oscillatory behaviors agree with those predicted from the Fermi surfaces calculated theoretically on the basis of the superlattice configuration and the electron concentration.

Received 9 February 1977

DOI:https://doi.org/10.1103/PhysRevLett.38.1489

Authors & Affiliations

L. L. Chang^*, H. Sakaki^*,†, C. A. Chang, and L. Esaki

IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598

^*Part of this work was performed while the authors were guest scientists at the Francis Bitter National Magnet Laboratory, which is supported at Massachusetts Institute of Technology by the National Science Foundation.
^†On leave from the Institute of Industrial Science, University of Tokyo, Tokyo, Japan.