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- Title
Number-of-layer, pressure, and temperature resolved bond-phonon-photon cooperative relaxation of layered black phosphorus.
- Authors
Liu, Yonghui; Yang, Xuexian; Bo, Maolin; Zhang, Xi; Liu, Xinjuan; Sun, Chang Q.; Huang, Yongli
- Abstract
We systematically examined the effects of number-of-layer, pressure, and temperature on the bond length and energy, Debye temperature, atomic cohesive energy, and binding energy density for layered black phosphorus using bond-phonon-photon spectrometric methods. We clarified the following: (1) atomic under-coordination shortens and stiffens the PP bond, which raises the B2g and Ag2 phonon frequency and widens the bandgap, (2) bond thermal elongation and weakening soften all phonon modes, and (3) bond mechanical compression has the opposite effect of heating on phonon frequency relaxation. The phonon and photon energy depends on the bond length and energy, which determines the relevant elasticity and thermal stability of layered structure. More broadly, the approaches and findings of this work provide both insight into and efficient tools for further exploration of unusual behaviors of other two-dimensional substance. Copyright © 2016 John Wiley & Sons, Ltd.
- Subjects
PHOTONS; PHOSPHORUS; CHEMICAL bond lengths; BOND energy (Chemistry); PHONONS
- Publication
Journal of Raman Spectroscopy, 2016, Vol 47, Issue 11, p1304
- ISSN
0377-0486
- Publication type
Article
- DOI
10.1002/jrs.4964