1. Department of Physics, Washington University, One Brookings Drive, Saint Louis, Missouri 63130, Department of Physics, South Dakota School of Mines and Technology, 501 East St. Joseph Street, Rapid City, South Dakota 57701, RCB Hydrides LLC, 117 Miami Avenue, Franklin, Ohio 45005, and HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, California 90265