1. Nano-Device Laboratory, Department of Electrical and Computer Engineering, University of California, Riverside, California 92521, USA
2. Phonon Optimized Engineered Materials Center, University of California, Riverside, California 92521, USA
3. CENTERA Laboratories, Institute of High-Pressure Physics, Polish Academy of Sciences, Warsaw 01-142, Poland
4. Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Warsaw 00-665, Poland