Govindan Rangarajan,1,* Salman Habib,2,† and Robert D. Ryne3,‡ 1Department of Mathematics and Center for Theoretical Studies, Indian Institute of Science, Bangalore 560 012, India 2T-8, Theoretical Division, MS B285, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 3LANSCE-1, LANSCE Division, MS H817, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (Received 27 May 1997...

B. Chen, D. V. S. Muthu, Z. X. Liu, A. W. Sleight, and M. B. Kruger Department of Physics, University of Missouri, Kansas City, Missouri 64110 Department of Physics, Indian Institute of Science, Bangalore 560 012, India Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, Washington, D.C. 20015 Department of Chemistry, Oregon State University, Corval...