Résistivité et pouvoir thermoélectrique d'alliages à base d'argent

Coqblin, B.; Delaplace, Joseph; Levy, V.; Gomes, Alberto Alburquerque; Hillairet, J.

doi:10.1051/jphys:0196700280107500

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…Recently, Vassel 29 found that selenium impurities in copper produced a small value of the residual re- 30 studied the resistivity and thermoelectric power of silver-base alloys containing selenium and krypton. When combined with previous data, the valence dependence of the resistivity of copper-row (Cu-Kr) impurities in silver has a resonant shape with a peak at arsenic.…”

Section: E Discussionmentioning

confidence: 99%

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Spin-Flip Scattering Cross Section for Conduction Electrons of Foreign Atoms in Lithium and Sodium. I

1969

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We have measured the spin-flip scattering cross section for conduction electrons of impurities in metallic sodium and impurities in metallic lithium. The cross sections are deduced from the measurements of the dependence on impurity concentration of the linewidth of the conduction-electron spin resonance. Since the apparatus was an X-band superheterodyne spectrometer and the samples were small particles of about 10-ju diam, the Dyson theory must be applied to relate measured linewidth to relaxation time and thus to cross section. A simple theoretical analysis is applied which involves the numerical solution of the non-spinflip scattering by a screened Coulomb potential whose screening length is adjusted so that the s, p, and d scattering phase shifts satisfy the Friedel sum rule. We then orthogonalize these solutions to the core states of the impurity atom. Using these orthogonalized wave functions and assuming the spin-flip scattering results from a coupling of the electron spin to its orbital motion in the vicinity of the nucleus of the impurity, we use perturbation theory to compute a spin-flip scattering cross sections which has no adjustable parameters. The result accounts well for the magnitudes and trends as one moves down and across the periodic table for those impurities whose valence differs from that of the host by 0, 1, or 2 units. The theory does

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Section: E Discussionmentioning

confidence: 99%

“…Making use of the fact that c q z= cos (q,Z), it can be shown without difficulty that <Fi 2 ) Pnp = (l/lSK,* £ I(S'\\(r)l*\q) I 2 - (30) q,q'…”

Section: \Q) = *Myf(r) 9 Zf(r) (25)mentioning

confidence: 99%

Spin-Flip Scattering Cross Section for Conduction Electrons of Foreign Atoms in Lithium and Sodium. I

1969

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Electrotransport d'impuretes dans Cu et Ni

Guilmin

Turban

Gerl

1973

Journal of Physics and Chemistry of Solids

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Expulsion d'un électron lié dûe au choc de deux atomes d'un métal

Joyes

1969

J. Phys. France

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Dans cet article, nous poursuivons l'étude de l'émission cinétique d'ions secondaires dont le mécanisme se résume ainsi. Au cours d'un choc violent, un électron lié peut être arraché à un atome qui, s'il parvient à la surface du métal assez rapidement pour conserver son excitation, donnera un ion secondaire. Nous présentons ici le calcul de la probabilité de formation du trou profond. Lors du rapprochement de deux noyaux, un niveau moléculaire issu de deux niveaux atomiques liés voit son énergie croître jusqu'à atteindre le continuum des états libres. Un état lié virtuel prend alors naissance sur lequel un électron a un temps de vie fini. Si l'état lié virtuel interagit suffisamment longtemps avec les états non occupés de la bande de conduction, un trou peut s'y former et les atomes se séparer en emportant un trou profond

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Résistivité et pouvoir thermoélectrique d'alliages à base d'argent

Cited by 6 publications

References 4 publications

Spin-Flip Scattering Cross Section for Conduction Electrons of Foreign Atoms in Lithium and Sodium. I

Spin-Flip Scattering Cross Section for Conduction Electrons of Foreign Atoms in Lithium and Sodium. I

Electrotransport d'impuretes dans Cu et Ni

Expulsion d'un électron lié dûe au choc de deux atomes d'un métal

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