Miao-Ling Lin is now a Professor at the State Key Laboratory of Semiconductor Physics and Chip Technologies, Institute of Semiconductors, Chinese Academy of Sciences. She received her B.S. degree (2014) in Physics from Nankai University. And she obtained her Ph.D. degree from University of Chinese Academy of Sciences. Her current research interest focuses on optical properties of low-dimensional nanomaterials.
Ping-Heng Tan is a Professor at the State Key Laboratory of Semiconductor Physics and Chip Technologies at Institute of Semiconductors, Chinese Academy of Sciences. He obtained BS (1996) in Physics from Peking University, PhD (2001) from Institute of Semiconductors, Chinese Academy of Sciences. He worked at Walter Schottky Institut, Technische Universitaet Muenchen as a Posdoc Research Associate from 2001-2003. He was a KC-Wong Royal Society Fellow at Cambridge University from 2006-2007. His current research is on two-dimensional layered materials, nanocarbon materials and low-dimensional semiconductor materials. He was supported by National Science Fund for Distinguished Young Scholars in 2012.
Fig. 1.
(Color online) Schematic of θ-TaN’s structure and thermal transport mechanisms. (a) Hexagonal crystal structure of θ-TaN and scanning electron microscope image of a θ-TaN crystal. (b) Raman spectroscopy of θ-TaN. (c) Single X-ray diffraction spectrum. (d,e) Measured thermal conductivity of θ-TaN (red dots) along the a-axis (d) and c-axis (e) in comparison to first-principles calculations. Insets indicate the spatial mapping of thermal conductivity across theθ-TaN crystals. (f) Phonon band structure measured via IXS (circles) and first-principles calculations (solid lines). (g) Time-dependent electron relaxation profiles measured for θ-TaN (red), Cu (green), and Al (blue). (h) Electron-phonon coupling strength (λ) comparison between θ-TaN and conventional metals, highlighting its exceptionally weak coupling[3].
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