1. Department of Physics and Astronomy University of Missouri‐Kansas City Kansas City MO 64110 USA
2. Department of Chemistry University of Missouri‐Kansas City Kansas City MO 64110 USA
3. Department of Physics University at Albany Albany NY 12222 USA
4. Department of Physics University of Michigan Ann Arbor MI 48109 USA
5. Department of Mechanical and Aerospace Engineering University of Virginia Charlottesville VA 22904 USA
6. Logic Technology Development Intel Corporation Hillsboro OR 97124 USA