1. Oden Institute for Computational Engineering and Sciences, The University of Texas at Austin, 201 E. 24th Street, Austin, Texas 78712, United States
2. Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
3. Université de Rennes, ENSCR, INSA Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
4. Department of Mechanical and Materials Science Engineering, Cyprus University of Technology, P.O. Box 50329, 3603 Limassol, Cyprus