scholarly journals On the electronic specific heat in dilute alloys

1978 ◽  
Vol 56 (2) ◽  
pp. 288-291 ◽  
Author(s):  
L. Larose ◽  
F. W. Kus ◽  
J. P. Carbotte
Keyword(s):  
Specific Heat ◽  
Density Of States ◽  
Pure Metal ◽  
Electronic Specific Heat ◽  
Density Of State ◽  
Mass Renormalization ◽  
Dilute Alloys ◽  
State Changes

The coefficient γ of the electronic specific heat is calculated accounting, on the same footing, for the change in the band density of states and the change in the electron–phonon mass renormalization that occurs when small amounts of impurities are added to a pure metal. For alkali alloys it is found that the changes in the mass renormalization are more important than density of state changes.

Electronic Specific Heat of Dilute Alloys

1969 ◽  
Vol 178 (3) ◽  
pp. 918-922 ◽  
Author(s):  
P. L. TAYLOR
Keyword(s):  
Specific Heat ◽  
Electronic Specific Heat ◽  
Dilute Alloys

Low temperature specific heats of zinc alloyed with silver

1975 ◽  
Vol 343 (1634) ◽  
pp. 363-374 ◽  
Keyword(s):  
Low Temperature ◽  
Fermi Level ◽  
Specific Heat ◽  
Debye Temperature ◽  
Density Of States ◽  
Electronic Specific Heat ◽  
Pure Zinc ◽  
Specific Heats ◽  
Complete Breakdown ◽  
Specific Heat Coefficient

Measurements of the electronic specific heat coefficient and of the limiting Debye temperature are reported for pure zinc and for two n-phase alloys containing 2 at. % and 4 at. % silver in zinc, respectively. After a correction for electron-phonon enhancement the electronic specific heat coefficient for pure zinc differs by only a small percentage from the calculated value reported in the literature on the basis of a band calculation. The results for the alloys show a decreasing trend of the density of states at the Fermi level when silver is added to zinc. This is contrary to a prediction based on a rigid band approach. Hence, the results indicate a complete breakdown of the rigid band condition on alloying. The reasons for this are most likely associated with the influence of the d band electrons or with charge distribution effects between solute and solvent atoms.

Electronic specific heat of aluminum-based alloys

1970 ◽  
Vol 48 (12) ◽  
pp. 1504-1513 ◽  
Author(s):  
J. P. Carbotte ◽  
P. T. Truant ◽  
R. C. Dynes
Keyword(s):  
Band Structure ◽  
Specific Heat ◽  
Electron Concentration ◽  
Free Electron ◽  
Strong Dependence ◽  
Direct Consequence ◽  
Electronic Specific Heat ◽  
Mass Renormalization ◽  
Electron Model ◽  
Free Electron Model

It has recently been found that in aluminum-based alloys, the change in the logarithm of the specific heat with the logarithm of the electron concentration is more than three times the value expected from free electron model considerations. This is not likely to be a result of band structure. We suggest that this experimental behavior is a direct consequence of the strong dependence of the electron–phonon mass renormalization of the specific heat on the electron concentration.

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