Anisotropy dependence of thec-axis phonon dispersion in the high-temperature superconductors

1998 ◽  
Vol 57 (22) ◽  
pp. 14444-14452 ◽  
Author(s):  
Claus Falter ◽  
Michael Klenner ◽  
Georg A. Hoffmann
Keyword(s):  
High Temperature ◽  
Phonon Dispersion ◽  
High Temperature Superconductors

Theory of renormalized phonon group velocity in high-temperature superconductors

2019 ◽  
Vol 33 (27) ◽  
pp. 1950337
Author(s):  
Sanjeev K. Verma ◽  
Anushri Gupta ◽  
Anita Kumari ◽  
B. D. Indu
Keyword(s):  
High Temperature ◽  
Group Velocity ◽  
Quantum Dynamics ◽  
Phonon Frequency ◽  
Phonon Dispersion ◽  
High Temperature Superconductors ◽  
Model Calculations ◽  
Phonon Group Velocity ◽  
Frequency Temperature ◽  
Phonon Dispersion Relations

The expressions for the renormalized phonon group velocity (RPGV) has been developed from renormalized phonon dispersion relations obtained with the help of impurity-induced anharmonic quantum dynamics of phonons via Green’s functions. It is observed that RPGV shows dependence on doping, phonon frequency, temperature, and anharmonicity. The [Formula: see text] superconductor has been taken for model calculations to successfully apply the new results of RPGV.

A study by GC-MS of the decomposition of precursors for the MOCVD of high temperature superconductors

2002 ◽  
Vol 12 (4) ◽  
pp. 85-92
Author(s):  
O. V. Lopaeva ◽  
M. L. Hitchman ◽  
S. H. Shamlian ◽  
D. R. Watson
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors
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