V. Ramachandran, C. D. Lee, and R. M. Feenstra
Department of Physics,
Carnegie
Mellon University, Pittsburgh, Pennsylvania 15213
A. R. Smith
Department of Physics and
Astronomy,
Ohio University, Athens, Ohio 45701
D. W. Greve
Department of Electrical and
Computer
Engineering, Carnegie Mellon University, Pittsburgh,
Pennsylvania 15213
Received 13 July 1999; published in the issue dated 24 April 2000
A Comment on the Letter by Qi-Kun Xue, et al., Phys. Rev.
Lett. 82, 3074
(1999). The authors of the
Letter offer a Reply.
© 2000 The American Physical Society