Document Type

Article

Publication Date

1968

Comments

© 1968 The American Physical Society. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters 20.18, and may be found at http://link.aps.org/doi/10.1103/PhysRevLett.20.987

DOI

10.1103/PhysRevLett.20.987


Included in

Physics Commons

Share

COinS