Roles of Optical Phonons and Logarithmic Profile of Electron-Phonon Coupling Integration in Superconducting Sc0.5Y0.5H6 Superhydride Under Pressures

2022 ◽  
pp. 163524
Author(s):  
Wiwittawin Sukmas ◽  
Prutthipong Tsuppayakorn-aek ◽  
Udomsilp Pinsook ◽  
Rajeev Ahuja ◽  
Thiti Bovornratanaraks
Keyword(s):  
Optical Phonons ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

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.

Optical phonons and electron-phonon coupling in CdS x Se 1-x quantum dots

1995 ◽  
Author(s):  
Vincenzo Spagnolo ◽  
Gaetano Scamarcio ◽  
G. Ventruti ◽  
M. Lugara ◽  
Michele Ferrara ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Phonons ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

scholarly journals Optical phonons in methylammonium lead halide perovskites and implications for charge transport

2016 ◽  
Vol 3 (6) ◽  
pp. 613-620 ◽  
Author(s):  
Michael Sendner ◽  
Pabitra K. Nayak ◽  
David A. Egger ◽  
Sebastian Beck ◽  
Christian Müller ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Charge Transport ◽  
Optical Phonon ◽  
Optical Phonons ◽  
Phonon Coupling ◽  
Upper Limits ◽  
Electron Phonon Coupling ◽  
Halide Perovskites ◽  
Lead Halide

The measured optical phonon frequencies are used to determine the electron–phonon coupling and upper limits for charge carrier mobilities.

Observation of Core Phonon in Electron–Phonon Coupling in Au25 Nanoclusters

2021 ◽  
Vol 12 (6) ◽  
pp. 1690-1695
Author(s):  
Zhongyu Liu ◽  
Yingwei Li ◽  
Wonyong Shin ◽  
Rongchao Jin
Keyword(s):  
Phonon Coupling ◽  
Electron Phonon Coupling

scholarly journals Electron-phonon coupling in the magnetic Weyl semimetal ZrCo2Sn

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
I.Yu. Sklyadneva ◽  
R. Heid ◽  
P. M. Echenique ◽  
E. V. Chulkov
Keyword(s):  
Phonon Coupling ◽  
Weyl Semimetal ◽  
Electron Phonon Coupling
Sign in / Sign up

Export Citation Format

Share Document