Effect of Fermi Surface Geometry on Electron-Electron Scattering

1971 ◽  
Vol 4 (2) ◽  
pp. 302-311 ◽  
Author(s):  
Christopher Hodges ◽  
Henrik Smith ◽  
J. W. Wilkins
Keyword(s):  
Fermi Surface ◽  
Electron Scattering ◽  
Surface Geometry

On the Fermi surface geometry and antiferromagnetism of YBa2Cu3O6+x

2000 ◽  
Vol 336 (1-2) ◽  
pp. 157-161 ◽  
Author(s):  
V.S Oudovenko ◽  
S.Y Savrasov ◽  
O.K Andersen
Keyword(s):  
Fermi Surface ◽  
Surface Geometry

Consequences of Fermi surface geometry

1989 ◽  
Vol 162-164 ◽  
pp. 769-770
Author(s):  
Walter A. Harrison
Keyword(s):  
Fermi Surface ◽  
Surface Geometry

Interstitial carbon in palladium: Fermi surface and electron scattering

1986 ◽  
Vol 16 (6) ◽  
pp. 707-720 ◽  
Author(s):  
H L M Bakker ◽  
M J C de Jong ◽  
P M Oppeneer ◽  
R Griessen ◽  
A Lodder ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Electron Scattering ◽  
Interstitial Carbon

Electron and phonon scattering II. Thermoelectricity in rubidium, caesium and alloys at very low temperatures

1963 ◽  
Vol 274 (1357) ◽  
pp. 154-162 ◽  
Keyword(s):  
Fermi Surface ◽  
Electron Scattering ◽  
Small Angle ◽  
Low Temperatures ◽  
Phonon Scattering ◽  
Large Angle ◽  
Phonon Drag ◽  
Diffusion Term ◽  
Angle Scattering ◽  
The Difference

Following earlier measurements on pure potassium and alloys, we have now made a corresponding study at very low temperatures of thermoelectricity in rubidium, caesium, and their alloys with each other and with potassium. The results have proved in accord with our interpretation of the earlier work, and we discuss the trends observed in both the ‘electron diffusion’ and ‘phonon-drag’ contributions to the absolute thermoelectric power. Both contributions as observed in these metals are consistent with a larger distortion in the Fermi surface of caesium than in those of potassium or rubidium. It appears that the changes in the thermoelectric diffusion term can be attributed consistently to the difference arising from large-angle and small angle scattering. It is supposed that in turn these types of electron scattering arise from the presence of homovalent and heterovalentim purity centres.

The Effect of Alloying on the Fermi Surface of Copper. II. Electron-scattering and Neck Cross Sections with Dilute Heterovalent and Transition Metal Solutes

1971 ◽  
Vol 49 (19) ◽  
pp. 2449-2461 ◽  
Author(s):  
P. T. Coleridge ◽  
I. M. Templeton
Keyword(s):  
Transition Metal ◽  
Fermi Surface ◽  
Electron Scattering ◽  
Cross Sections ◽  
Kondo Effect ◽  
Metal Alloys ◽  
Neck Size ◽  
Transition Metal Alloys ◽  
Scattering Anisotropy ◽  
Scattering Cross Sections

The Fermi surface neck size and the scattering cross sections for the neck and [Formula: see text] belly orbits have been measured in dilute alloys of Zn, Al, Ge, Si, Ni, Co, Fe, Mn, and Cr in Cu. Earlier observations of rigid-band behavior for the neck size in Cu(Zn) and Cu(Al), while essentially substantiated by the present measurements, are now believed to be fortuitous; Cu(Ge) and Cu(Si) do not agree with a rigid-band prediction. The changes (generally reductions) of neck size in the transition metal alloys do not appear to be related directly to changes of electron concentration. The scattering anisotropy is rather small in the heterovalent alloys, the scattering being somewhat greater on the necks, but is large and in the opposite sense in the transition metal alloys. The magnitude and anisotropy of scattering is interpreted in terms of phase shifts associated with the impurities and the wave functions over the Fermi surface. There is evidence for additional scattering anisotropy in alloys exhibiting the Kondo effect.

Temperature dependence of the resistivity of Hg3–δAsF6

1982 ◽  
Vol 60 (9) ◽  
pp. 1348-1357 ◽  
Author(s):  
E. Batalla ◽  
W. R. Datars
Keyword(s):  
Fermi Surface ◽  
Temperature Dependence ◽  
Electron Scattering ◽  
Short Range ◽  
Linear Chain ◽  
Three Dimensional ◽  
One Dimensional ◽  
Anisotropic Superconductor ◽  
Short Range Ordering ◽  
Long Range Ordering

The resistivity of the linear-chain mercury compound Hg3–δAsF6 is reported in the temperature range 1.4–300 K. Electron scattering by one-dimensional and three-dimensional phonons on a cylindrical Fermi surface is used to calculate the temperature dependence of the resistivity which agrees with measurements of the resistivity between 4.2 and 90 K. The resistivity is determined by the Montgomery method which is extended to the case when electrical probes are not at the corners of a sample. The anisotropy ρc/ρa of the resistivity is in the range 95 ± 10 between 40 and 180 K. It is explained by a 1.4% undulation along the Fermi surface cylinders. Changes in the anisotropy give evidence of three-dimensional, long-range ordering at 120 K and short-range ordering of the mercury chains between 180 and 200 K reported previously. Hysteresis in the resistivity shows an unusual transition at 217 ± 3 K which is evident only upon cooling samples. There is no evidence of zero, c-axis resistivity below 4.1 K to support the suggestion that Hg3–δAsF6 is an anisotropic superconductor.

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