Study of Electron Density of States and Electronic Heat Capacity of High-temperature Cuprate Superconductor: La2−xSrxCuO4

2019 ◽  
Vol 33 (8) ◽  
pp. 2293-2297
Author(s):  
Anushri Gupta ◽  
Sanjeev K. Verma ◽  
Anita Kumari ◽  
B. D. Indu
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Electron Density ◽  
Density Of States ◽  
Cuprate Superconductor ◽  
Electronic Heat Capacity ◽  
Electron Density Of States ◽  
Electronic Heat ◽  
High Temperature Cuprate Superconductor

scholarly journals Electrons and Phonons in High Temperature Superconductors

2013 ◽  
Vol 2013 ◽  
pp. 1-4
Author(s):  
Anu Singh ◽  
Hempal Singh ◽  
Vinod Ashokan ◽  
B. D. Indu
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Heat Transport ◽  
Function Theory ◽  
High Temperature Superconductors ◽  
Phonon Coupling ◽  
Electronic Heat Capacity ◽  
Electron Phonon Coupling ◽  
Electronic Heat ◽  
Double Time

The defect-induced anharmonic phonon-electron problem in high-temperature superconductors has been investigated with the help of double time thermodynamic electron and phonon Green’s function theory using a comprehensive Hamiltonian which includes the contribution due to unperturbed electrons and phonons, anharmonic phonons, impurities, and interactions of electrons and phonons. This formulation enables one to resolve the problem of electronic heat transport and equilibrium phenomenon in high-temperature superconductors in an amicable way. The problem of electronic heat capacity and electron-phonon problem has been taken up with special reference to the anharmonicity, defect concentration electron-phonon coupling, and temperature dependence.

Electronic heat capacity of some vanadium compounds at low temperatures

2021 ◽  
pp. 8-12
Author(s):  
Vad.I. Surikov ◽  
◽  
Val.I. Surikov ◽  
Y.V. Kuznetsova ◽  
N.A. Semenyuk ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Phase Transitions ◽  
Density Of States ◽  
Low Temperatures ◽  
Molar Heat Capacity ◽  
Constant Pressure ◽  
State Density ◽  
Electronic Heat Capacity ◽  
Vanadium Compounds ◽  
Electronic Heat

The paper presents the results of a study of the temperature dependence of molar heat capacity at constant pressure in the range (from 5 to 300 K) for vanadium-based materials. For all the studied materials, the values of the density of States near the Fermi level are calculated. It was found that for V3Si and V3Ge materials, the values of the state density μ( E ) correlate with the transition temperatures to the superconducting state. For materials V2O3 and V1.973Me0.027O3 (Me - Al, Fe, Cr), it was found that the temperatures of metal-dielectric phase transitions decrease with increasing values of the density of States.

Transition from a Bloch-Wilson to a free-electron density of states in Znn− clusters

2005 ◽  
Vol 123 (22) ◽  
pp. 221102 ◽  
Author(s):  
Oleg Kostko ◽  
Gert Wrigge ◽  
Ori Cheshnovsky ◽  
Bernd v. Issendorff
Keyword(s):  
Electron Density ◽  
Density Of States ◽  
Free Electron ◽  
Free Electron Density ◽  
Electron Density Of States
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