Nonadiabatic superconductivity: Electron phonon interaction beyond Migdal's Theorem

1995 ◽  
Vol 99 (3-4) ◽  
pp. 535-543 ◽  
Author(s):  
L. Pietronero ◽  
P. Benedetti ◽  
E. Cappelluti ◽  
C. Grimaldi ◽  
S. Str�ssler ◽  
...  
Keyword(s):  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Migdal's Theorem

scholarly journals Fermi blockade of the strong electron-phonon interaction in optimally doped high temperature superconductors

2021 ◽  
Author(s):  
Andrey Mishchenko ◽  
Naoto Nagaosa ◽  
Nikolay Prokof'ev ◽  
Igor Tupitsyn
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Two Dimensional ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction ◽  
Holstein Model ◽  
Bold Line ◽  
Spin Polarized ◽  
Migdal's Theorem

Abstract We study how manifestations of strong electron-phonon interaction (EPI) depend on the carrier concentration by solving the two-dimensional Holstein model for the spin-polarized fermions using an approximation free bold-line diagrammatic Monte Carlo (BDMC) method. We show that the strong EPI, obviously present at very small Fermion concentration, is masked by the Fermi blockade effects and Migdal's theorem to the extent that it manifests itself as moderate one at large carriers densities. Suppression of strong EPI fingerprints is in agreement with experimental observations in doped high temperature superconductors.

scholarly journals Fermi Blockade of the Electron-phonon Interaction: Why Strong Coupling Effects May Not Be Seen in Optimally Doped High Temperature Superconductors

2020 ◽  
Author(s):  
Andrey Mishchenko ◽  
Naoto Nagaosa ◽  
Nikolay Prokof'ev
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Two Dimensional ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction ◽  
Holstein Model ◽  
Bold Line ◽  
Spin Polarized ◽  
Migdal's Theorem

Abstract We study how manifestations of strong electron-phonon interaction (EPI) depend on the carrier concentration by solving the two-dimensional Holstein model for the spin-polarized fermions using an approximation free bold-line diagrammatic Monte Carlo (BDMC) method. We show that the strong EPI, obviously present at very small Fermion concentration, is masked by the Fermi blockade effects and Migdal's theorem to the extent that it manifests itself as moderate one at large carriers densities. Suppression of strong EPI fingerprints is in agreement with experimental observations in doped high temperature superconductors.

Nonadiabatic Superconductivity: Electron-Phonon Interaction Beyond Migdal's Theorem

1995 ◽  
Vol 75 (6) ◽  
pp. 1158-1161 ◽  
Author(s):  
C. Grimaldi ◽  
L. Pietronero ◽  
S. Strässler
Keyword(s):  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Migdal's Theorem

The simulation of the electron-phonon interaction in silicon

2018 ◽  
Vol 30 (12) ◽  
pp. 3-16
Author(s):  
A. Berezin ◽  
◽  
Yu. Volkov ◽  
M. Markov ◽  
I. Tarakanov ◽  
...  
Keyword(s):  
Phonon Interaction ◽  
Electron Phonon Interaction

Linear electron-phonon interaction in dye-doped polymers

1989 ◽  
Vol 162 (3) ◽  
pp. 217-220 ◽  
Author(s):  
S. Saikan ◽  
A. Imaoka ◽  
Y. Kanematsu ◽  
T. Kishida
Keyword(s):  
Linear Electron ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Doped Polymers

scholarly journals Electron-phonon interaction in In-induced √7 ×√3 structures on Si(111) from first-principles

2021 ◽  
Author(s):  
I. Yu. Sklyadneva ◽  
Rolf Heid ◽  
Pedro Miguel Echenique ◽  
Evgueni Chulkov
Keyword(s):  
Density Functional Theory ◽  
Double Layer ◽  
First Principles ◽  
Linear Response ◽  
Density Functional ◽  
Single Layer ◽  
Phonon Interaction ◽  
Functional Theory ◽  
Electron Phonon Interaction ◽  
The Density Functional Theory

Electron-phonon interaction in the Si(111)-supported rectangular √(7 ) ×√3 phases of In is investigated within the density-functional theory and linear-response. For both single-layer and double-layer √(7 ) ×√3 structures, it...

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