Point measurements of the electron-phonon scattering rate in silver

1983 ◽  
Vol 50 (3-4) ◽  
pp. 379-389 ◽  
Author(s):  
V. A. Gasparov ◽  
J. Lebech ◽  
K. Saermark
Keyword(s):  
Phonon Scattering ◽  
Scattering Rate ◽  
Electron Phonon Scattering

The effect of electron effective mass mismatch on electron - phonon scattering rate in a quantum well

1997 ◽  
Vol 12 (3) ◽  
pp. 296-299 ◽  
Author(s):  
Zheng Yisong ◽  
Lu Tianquan ◽  
Wang Yiding ◽  
Wu Xuhong ◽  
Zhang Chengxiang ◽  
...  
Keyword(s):  
Quantum Well ◽  
Effective Mass ◽  
Phonon Scattering ◽  
Electron Effective Mass ◽  
Scattering Rate ◽  
Electron Phonon Scattering

Anisotropy of the electron-phonon scattering rate in metals

1975 ◽  
Vol 19 (1-4) ◽  
pp. 49-50 ◽  
Author(s):  
V. F. Gantmakher ◽  
V. A. Gasparov
Keyword(s):  
Phonon Scattering ◽  
Scattering Rate ◽  
Electron Phonon Scattering

Thermal Modeling of Very Small Scale Devices

2004 ◽  
Author(s):  
A. Bulusu ◽  
D. G. Walker
Keyword(s):  
Phonon Scattering ◽  
Electronic Device ◽  
Electron Tunneling ◽  
Quantum Effects ◽  
Small Scale ◽  
Channel Current ◽  
Scattering Rate ◽  
Scattering Effects ◽  
Computationally Intensive ◽  
Electron Phonon Scattering

As electronic device dimensions shrink down to the nanoscale regime, quantum effects such as electron tunneling and quantum confinement become significant. Along with quantum effects, various scattering processes such as carrier-carrier and carrier-defect scattering will influence device performance. Many transport models are not mature enough to couple the thermal effects with electronic solutions at such small scales. Incorporation of strong scattering influences on the electron transport in most cases is extremely difficult and computationally intensive. In this paper, we study a simple model that allows for integration of electron-phonon scattering effects in a nanotransistor. An acoustic deformation potential based electron-phonon scattering model is used to incorporate scattering in the device. A 7.5% drop in channel current was observed for a scattering rate of 1013/sec while current flow dropped by 50% for higher scattering rates. The effective channel resistance due to scattering was found to increase by a factor of 1.3. The results are compared to the I-V characteristics obtained using the non-equilibrium Green’s function (NEGF) formalism and were found to match well. The effect of phase-breaking scattering was also studied using NEGF where a 25% decrease in channel current was obtained thus demonstrating the importance of including scattering effects with quantum transport.

An accelerated algorithm for full band electron–phonon scattering rate computation

2014 ◽  
Vol 185 (12) ◽  
pp. 3392-3397 ◽  
Author(s):  
Yanbiao Chu ◽  
Pierre Gautreau ◽  
Tarek Ragab ◽  
Cemal Basaran
Keyword(s):  
Phonon Scattering ◽  
Band Electron ◽  
Scattering Rate ◽  
Full Band ◽  
Electron Phonon Scattering

scholarly journals Thermo-Optical Effects in Plasmonic Metal Nanostructures

2021 ◽  
Vol 66 (2) ◽  
pp. 112
Author(s):  
O.A. Yeshchenko ◽  
A.O. Pinchuk
Keyword(s):  
Surface Plasmon Resonance ◽  
Temperature Dependence ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Laser Heating ◽  
Phonon Scattering ◽  
Red Shift ◽  
Au Nps ◽  
Scattering Rate ◽  
Electron Phonon Scattering

The effects of the temperature on the surface plasmon resonance (SPR) in noble metal nanoparticles at various temperatures ranging from 77 to 1190 K are reviewed. A temperature increase results in an appreciable red shift and leads to a broadening of the SPR in the nanoparticles (NPs). This observed thermal expansion along with an increase in the electron-phonon scattering rate with rising temperature emerge as the dominant physical mechanisms producing the red shift and broadening of the SPR. Strong temperature dependence of surface plasmon enhanced photoluminescence from silver (Ag) and copper (Cu) NPs is observed. The quantum photoluminescence yield of Ag nanoparticles decreases as the temperature increases, due to a decrease in the plasmon enhancement resulting from an increase in the electron-phonon scattering rate. An anomalous temperature dependence of the photoluminescence from Cu nanoparticles was also observed; the quantum yield of photoluminescence increases with the temperature. The interplay between the SPR and the interband transitions plays a critical role in this effect. The surface-plasmon involved laser heating of a dense 2D layer of gold (Au) NPs and of Au NPs in water colloids is also examined. A strong increase in the Au NP temperature occurs, when the laser frequency approaches the SPR. This finding supports the resonant plasmonic character of the laser heating of metal NPs. The sharp blue shift of the surface plasmon resonance in colloidal Au NPs at temperatures exceeding the water boiling point indicates the vapor-bubble formation near the surface of the NPs.

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