Raman spectroscopy of intermediate valent (IV) systems: Electron-phonon coupling and charge fluctuation

1983 ◽  
Vol 5 (3-4) ◽  
pp. 185-197
Author(s):  
A Jayaraman
Keyword(s):  
Raman Spectroscopy ◽  
Charge Fluctuation ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Intermediate Valent

Raman spectroscopy and electron-phonon coupling in Eu3+ doped Gd2Zr2O7 nanopowders

2017 ◽  
Vol 73 ◽  
pp. 541-544 ◽  
Author(s):  
G. Krizan ◽  
M. Gilic ◽  
J.L. Ristic-Djurovic ◽  
J. Trajic ◽  
M. Romcevic ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

scholarly journals Evolution of high-frequency Raman modes and their doping dependence in twisted bilayer MoS2

Nanoscale ◽  
2020 ◽  
Vol 12 (33) ◽  
pp. 17272-17280 ◽  
Author(s):  
Rahul Debnath ◽  
Indrajit Maity ◽  
Rabindra Biswas ◽  
Varun Raghunathan ◽  
Manish Jain ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Coupling Strength ◽  
First Principles ◽  
High Frequency ◽  
Twist Angle ◽  
Interlayer Coupling ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Raman Modes ◽  
Systematic Evolution

Here, we demonstrate the systematic evolution of the interlayer coupling and electron-phonon coupling strength with twist angle in bilayer MoS2 using a combination of Raman spectroscopy and a combination of classical and first-principles based simulations.

scholarly journals Probing the electron-phonon coupling in ozone-doped graphene by Raman spectroscopy

2010 ◽  
Vol 82 (7) ◽  
Author(s):  
F. Alzina ◽  
H. Tao ◽  
J. Moser ◽  
Y. García ◽  
A. Bachtold ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Doped Graphene

scholarly journals On the Superconductivity Suppression in Eu1−xPrxBa2Cu3O7−δ

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3503
Author(s):  
Paweł Pęczkowski ◽  
Piotr Zachariasz ◽  
Cezariusz Jastrzębski ◽  
Jarosław Piętosa ◽  
Elżbieta Drzymała ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Low Temperature ◽  
Magnetic Moment ◽  
Schematic Diagram ◽  
Optical Phonons ◽  
Phonon Coupling ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Phonon Coupling ◽  
X Ray Absorption

This article reports on the non-trivial suppression of superconductivity in the Eu1−xPrxBCO cuprates. As non-magnetic Eu3+ ions are replaced by Pr3+ carrying a magnetic moment, spin-related superconductivity loss can be expected. The research shows that the superconductivity disappearance for x > 0.4 results from depletion of the carriers and their localization. The above conclusion was drawn by low-temperature X-ray diffraction analysis showing increased characteristic phonon frequencies with Pr content. This mechanism should promote electron–phonon coupling, at least for acoustic phonons. However, the inverse phenomenon was detected. Namely, there is a gradual deterioration of the optical phonons responsible for vibration of the Cu–O bonds with Pr increasing, as evidenced by Raman spectroscopy. Furthermore, the results of X-ray absorption spectroscopy precisely showed the location of the carriers for Pr-rich specimens. Finally, a schematic diagram for Eu1−xPrxBCO is proposed to consolidate the presented research.

Raman spectroscopy of graphite in high magnetic fields: Electron-phonon coupling and magnetophonon resonance

2013 ◽  
Author(s):  
Younghee Kim ◽  
Yinbin Ma ◽  
Adilet Imambekov ◽  
Nikolai G. Kalugin ◽  
Antonio Lombardo ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Magnetic Fields ◽  
High Magnetic Fields ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Magnetophonon Resonance
Sign in / Sign up

Export Citation Format

Share Document