Role of electron-phonon scattering in the production of absorption bands in electron microscopy

1998 ◽  
Author(s):  
O. A. Podsvirov
Keyword(s):  
Electron Microscopy ◽  
Phonon Scattering ◽  
Absorption Bands ◽  
Electron Phonon Scattering

Role of phonon dimensionality on electron-phonon scattering rates

1992 ◽  
Vol 68 (8) ◽  
pp. 1156-1159 ◽  
Author(s):  
J. F. DiTusa ◽  
K. Lin ◽  
M. Park ◽  
M. S. Isaacson ◽  
J. M. Parpia
Keyword(s):  
Phonon Scattering ◽  
Electron Phonon Scattering ◽  
Scattering Rates

The role of phonon–phonon and electron–phonon scattering in thermal transport in PdCoO2

2017 ◽  
Vol 19 (32) ◽  
pp. 21714-21721 ◽  
Author(s):  
Long Cheng ◽  
Qing-Bo Yan ◽  
Ming Hu
Keyword(s):  
Phonon Scattering ◽  
Electron Gas ◽  
Dimensional Electron ◽  
Solid State Physics ◽  
Two Dimensional Electron Gas ◽  
Fundamental Interest ◽  
Unique Nature ◽  
Dimensional Electron Gas ◽  
Electron Phonon Scattering

The layered metal oxide PdCoO2 is of fundamental interest in solid-state physics due to its unique nature as a two-dimensional electron gas.

scholarly journals Thermoelectric Power of Gd4(Co-A)3 Compounds (A = Cu, Pt)

2012 ◽  
Vol 730-732 ◽  
pp. 159-163
Author(s):  
Teresa M. Seixas ◽  
Manuel A. Salgueiro da Silva ◽  
Hans F. Braun ◽  
Georg Eska
Keyword(s):  
Low Temperature ◽  
Thermoelectric Power ◽  
Phonon Scattering ◽  
Positive Maximum ◽  
Spin Disorder ◽  
Structure Changes ◽  
Power Measurements ◽  
Electron Band Structure ◽  
Electron Phonon Scattering

We report on a comparative study of thermoelectric power measurements (S(T)) in ferrimagnetic Gd4(Co1-xAx)3 compounds with A = Cu, Pt, in the temperature range 8 K – 300 K. Whereas in Gd4Co3S(T) is always negative, for x > 0 the substitution of Co for Cu/Pt gives rise to the appearance of a low temperature positive maximum in S(T) at around 30 K. Based on our previous study of Gd4(Co1-xCux)3 compounds, we argue that this maximum in S(T) originates from electron-magnon scattering and is sensitive to electron band structure changes resulting from the substitution of Co for Cu/Pt and the accompanying reduction in the ratio between the electron-magnon and the electron-phonon scattering strengths. The decreasing role of Co 3d electrons with the progressive substitution of Co for Cu/Pt, evidenced by a strong reduction in the spin disorder resistivity and the Co magnetic moment, is seen to be crucial for the existence of such low temperature maximum in S(T) for x > 0. It is seen that the substitution of Co for Pt leads to higher values of the amplitude and temperature of the positive maximum in S(T) than the substitution of Co for Cu.

A Theoretical study of the Thermoelectric Transport Coefficients of n-type PbTe

2014 ◽  
Vol 1661 ◽  
Author(s):  
Jawaher Al-Otaibi ◽  
Gyaneshwar P. Srivastava
Keyword(s):  
Electronic Transport ◽  
Continuum Model ◽  
Theoretical Study ◽  
Phonon Scattering ◽  
Transport Coefficients ◽  
Single Mode ◽  
Phonon Modes ◽  
Anharmonic Interactions ◽  
Electron Phonon Scattering

ABSTRACTIn this work we present a theoretical study of the transport coefficients of n-type PbTe. The electronic transport coefficients are calculated using the isotropic-nearly-free-electron approximation, including the effect of band non-parabolicity on electron-phonon scattering. The lattice thermal transport coefficient is computed by employing the isotropic continuum model for the dispersion relation for acoustic as well as optical phonon branches, an isotropic anharmonic continuum model for crystal anharmonicity, and the single-mode relaxation time scheme. The role of transverse optical (TO) phonon modes in anharmonic interactions will be discussed in detail.

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