1. The School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
2. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
3. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
4. Paul-Drude Institut für Festkörperelektronik Berlin, Leibniz-Institut im Forschungsverbund Berlin eV., Berlin 10117, Germany
5. Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
6. Physics Department, Karamanoglu Mehmetbey University, Karaman, 70000, Turkey