Self-Consistent Calculation of the q Dependence of the Electron-Phonon Coupling in Aluminum

1985 ◽  
Vol 55 (8) ◽  
pp. 837-840 ◽  
Author(s):  
Michel M. Dacorogna ◽  
Marvin L. Cohen ◽  
Pui K. Lam
Keyword(s):  
Phonon Coupling ◽  
Consistent Calculation ◽  
Electron Phonon Coupling ◽  
Self Consistent

THE EFFECT OF PHONONS ON SPIN-FLUCTUATION SUPERCONDUCTIVITY

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3075-3077 ◽  
Author(s):  
P. M. R. BRYDON
Keyword(s):  
Cuprate Superconductors ◽  
Phonon Mode ◽  
Spin Fluctuation ◽  
Spin Fluctuations ◽  
Phonon Coupling ◽  
Wave State ◽  
Static Spin ◽  
Electron Phonon Coupling ◽  
Self Consistent

We present a study of the role of phonons in the cuprate superconductors. Assuming static spin fluctuations, we find that the self-consistent d-wave state is very sensitive to both the electron-phonon coupling strength and the phonon mode considered.

scholarly journals Polaronic Mechanism of Superconductivity in Cuprates

2013 ◽  
Vol 2013 ◽  
pp. 1-13
Author(s):  
Pradeep Chaudhary ◽  
Anuj Nuwal ◽  
S. C. Tiwari ◽  
R. K. Paliwal ◽  
S. L. Kakani
Keyword(s):  
Cuprate Superconductors ◽  
Convincing Evidence ◽  
Superconducting Order Parameter ◽  
Function Technique ◽  
Phonon Coupling ◽  
Strong Electron ◽  
Electron Phonon Coupling ◽  
Self Consistent ◽  
Pairing Model ◽  
Consistent Equation

A strong polaron pairing model of high-temperature cuprate superconductors is presented. The normal and anomalous one-particle Green’s functions are derived from a system with strong electron-phonon coupling. Self-consistent equation for the superconducting order parameter (Δ) is derived using Green’s function technique and following Lang and Firsov transformations. Expressions for specific heat, density of states, free energy, and critical field based on this model have been derived. The theory is applied to explain the experimental results in the system YBa2Cu3O7-x. There is convincing evidence that the theory is fully compatible with the key experiments.

POLARONIC MECHANISM OF SUPERCONDUCTIVITY IN DOPED FULLERIDE SYSTEMS

2009 ◽  
Vol 23 (04) ◽  
pp. 615-638 ◽  
Author(s):  
SURESH CHANDER TIWARI ◽  
ARVIND KASHYAP ◽  
ANIL K. SURANA ◽  
RADHA K. PALIWAL ◽  
SHYAM L. KAKANI
Keyword(s):  
Mean Field ◽  
Field Approximation ◽  
Mean Field Approximation ◽  
Phonon Coupling ◽  
Strong Electron ◽  
Electron Phonon Coupling ◽  
Self Consistent ◽  
The Mean ◽  
Consistent Equation ◽  
Good Agreement

A polaronic model of superconductivity in doped fulleride systems is presented. The normal and anomalous one-particle Green's functions are derived for a system with strong electron phonon coupling. The study of collapse of the electron band and the phonon vacuum is presented within the mean-field approximation. Self-consistent equation for the superconductivity order parameter (Δ) is derived using Green's fucntion technique and following Lang and Firsov transformations. Expressions for specific heat, density of states, free energy and critical field based on this model have been derived. The theory is applied to explain the experimental results in the systems K 3 C 60 and Rb 3 C 60. These results are in good agreement with the available experimental data.

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
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