1. Department of Physics, Oklahoma State University, 145 Physical Sciences Bldg., Rm 546, Stillwater, OK 74078, USA
2. Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USA
3. Physics Department, SUNY Oswego, 254 Shineman Center, Oswego, NY 13126, USA
4. Department of Physics, University at Buffalo, 239 Fronczak Hall, Buffalo, NY 14260-1500, USA
5. Department of Physics, Aurora University, 347 S. Gladstone Ave., Aurora, IL 60506-4892, USA
6. Institute of Physical Optics, 23 Dragomanov Str., 79-005 Lviv, Ukraine
7. CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, Anhui Province, China
8. Department of Physics, University of Nebraska–Omaha, Omaha, NE 68182, USA
9. S.M.A.R.T. Laboratory, Mechanical and Nuclear Engineering Department, Kansas State University, Manhattan, KS 66506, USA
10. Department of Physics and Astronomy, University of Nebraska-Lincoln, 855 North 16th Street, Lincoln, NE 68588, USA
11. Institut de Ciència dels Materials de la Universitat de València (ICMUV), University of Valencia, Carrer del Catedrátic José Beltrán Martinez, 2, 46980 Paterna, Valencia, Spain