A. Chaiken, M.S. Dresselhaus, and T.P. Orlando,
Department of Physics,
Massachusetts Institute of Technology, Cambridge, MA 02139
G. Dresselhaus and P.M. Tedrow,
Francis Bitter National Magnet Laboratory,
Massachusetts Institute of Technology, Cambridge, MA 02139
D.A. Neumann,
National Institute of Science and Technology,
Gaithersburg, MD 20899
W.A. Kamitakahara,
Department of Energy,
Washington, DC