Institution: | 1. Physics Department , University of California at Los Angeles , Los Angeles, CA, 90024, USA;2. Physics Department , University of California at Los Angeles , Los Angeles, CA, 90024, USA;3. Physics Dept. , Univ. of Illinois at Urbana-Champaign , Urbana, IL, 61801;4. AT &5. T Bell Laboratories , Whippany, NJ, 07981, USA;6. Allied Chemical Corporation , Morristown, NJ, 07960, USA |