Ultrafast Electron−Optical Phonon Scattering and Quasiparticle Lifetime in CVD-Grown Graphene

ACS Nano ◽  
2011 ◽  
Vol 5 (4) ◽  
pp. 3278-3283 ◽  
Author(s):  
Jingzhi Shang ◽  
Ting Yu ◽  
Jianyi Lin ◽  
Gagik G. Gurzadyan
Keyword(s):  
Optical Phonon ◽  
Phonon Scattering ◽  
Optical Phonon Scattering ◽  
Quasiparticle Lifetime ◽  
Grown Graphene

Polar Optical Phonon Instability and Intervalley Transfer in Gallium Nitride

1998 ◽  
Vol 512 ◽  
Author(s):  
B. E. Foutz ◽  
S. K. O'leary ◽  
M. S. Shur ◽  
L. F. Eastman ◽  
B. L. Gelmont ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Analytical Model ◽  
Optical Phonon ◽  
Room Temperature ◽  
Phonon Scattering ◽  
Polar Optical Phonon ◽  
Scattering Mechanism ◽  
Loss Mechanism ◽  
One Dimensional ◽  
Optical Phonon Scattering

ABSTRACTWe develop a simple, one-dimensional, analytical model, which describes electron transport in gallium nitride. We focus on the polar optical phonon scattering mechanism, as this is the dominant energy loss mechanism at room temperature. Equating the power gained from the field with that lost through scattering, we demonstrate that beyond a critical electric field, 114 kV/cm at T = 300 K, the power gained from the field exceeds that lost due to polar optical phonon scattering. This polar optical phonon instability leads to a dramatic increase in the electron energy, this being responsible for the onset of intervalley transitions. The predictions of our analytical model are compared with those of Monte Carlo simulations, and are found to be in satisfactory agreement.

The Temperature Dependence of Optical Phonon Scattering in Graphene under Strong Magnetic Field

2013 ◽  
Vol 82 (9) ◽  
pp. 094606 ◽  
Author(s):  
Zi-Wu Wang ◽  
Lei Liu ◽  
Lin Shi ◽  
Xiao-Jing Gong ◽  
Wei-Ping Li ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Temperature Dependence ◽  
Strong Magnetic Field ◽  
Optical Phonon ◽  
Phonon Scattering ◽  
Optical Phonon Scattering

Electron–optical–phonon scattering in non-square quantum-well structures

2000 ◽  
Vol 114 (2) ◽  
pp. 101-106 ◽  
Author(s):  
Wenhui Duan ◽  
Jia-Lin Zhu ◽  
Bing-Lin Gu ◽  
Jian Wu
Keyword(s):  
Quantum Well ◽  
Optical Phonon ◽  
Phonon Scattering ◽  
Quantum Well Structures ◽  
Optical Phonon Scattering
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