Single-exciton optical gain in semiconductor nanocrystals: Positive role of electron-phonon coupling

2016 ◽  
Vol 93 (11) ◽  
Author(s):  
Pieter Geiregat ◽  
Guy Allan ◽  
Zeger Hens ◽  
Christophe Delerue
Keyword(s):  
Semiconductor Nanocrystals ◽  
Optical Gain ◽  
Phonon Coupling ◽  
Positive Role ◽  
Electron Phonon Coupling

Role of electron–phonon coupling in thermal conductivity of metallic nanofluids

2019 ◽  
Vol 52 (48) ◽  
pp. 485302 ◽  
Author(s):  
Dong-Xing Song ◽  
Yu-Feng Zhang ◽  
Wei-Gang Ma ◽  
Xing Zhang
Keyword(s):  
Thermal Conductivity ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

The role of electron-phonon coupling in femtosecond laser damage of metals

1999 ◽  
Vol 69 (7) ◽  
pp. S99-S107 ◽  
Author(s):  
S.-S. Wellershoff ◽  
J. Hohlfeld ◽  
J. Güdde ◽  
E. Matthias
Keyword(s):  
Femtosecond Laser ◽  
Laser Damage ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Velocity renormalization in graphene: The role of trigonal warping and electron–phonon coupling effects

2017 ◽  
Vol 31 (30) ◽  
pp. 1750235 ◽  
Author(s):  
B. S. Kandemir ◽  
N. Gökçek
Keyword(s):  
Analytical Solution ◽  
Fermi Velocity ◽  
Combined Effects ◽  
Phonon Coupling ◽  
Strong Anisotropy ◽  
Energy Bands ◽  
Phonon Modes ◽  
Electron Phonon Coupling ◽  
Trigonal Warping

We investigate the combined effects of trigonal warping and electron–phonon interactions on the renormalization of the Fermi velocity in graphene. We present an analytical solution to the associated Fröhlich Hamiltonian describing the interaction of doubly degenerate-optical phonon modes of graphene with electrons in the presence of trigonal warp within the framework of Lee–Low–Pines theory. On the basis of our model, it is analytically shown that in addition to its renormalization, Fermi velocity exhibits strong anisotropy due to the trigonal warping. It is also found that in the regime where the trigonal warp starts, distortion of energy bands emerges due to electron–phonon coupling, and the bands exhibit strong anisotropy.

Extraordinary role of Zn in enhancing thermoelectric performance of Ga-doped n-type PbTe

2022 ◽  
Author(s):  
Zhong-zhen Luo ◽  
Songting Cai ◽  
Shiqiang Hao ◽  
Trevor Bailey ◽  
Yubo Luo ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Carrier Concentration ◽  
Lattice Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Ga Doping ◽  
Role Of Zn

Although Ga doping can weaken the electron phonon coupling of n-type PbTe, Ga-doped PbTe has a relatively low carrier concentration (n) and high lattice thermal conductivity (κlat), resulting in a...

Electron–phonon coupling in two-photon spectral gratings: role of molecular symmetry

2004 ◽  
Vol 107 (1-4) ◽  
pp. 194-202
Author(s):  
M Drobizhev ◽  
Yu Dzenis ◽  
A Karotki ◽  
A Rebane
Keyword(s):  
Molecular Symmetry ◽  
Phonon Coupling ◽  
Two Photon ◽  
Electron Phonon Coupling
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