Contributions of inter- and intraband excitations to electron heat capacity and electron-phonon coupling in noble metals / Patrick E. Hopkins in Journal of heat transfer, Vol. 132 N° 1 (Janvier 2010)  

Contributions of inter- and intraband excitations to electron heat capacity and electron-phonon coupling in noble metals [texte imprimé] / Patrick E. Hopkins, Auteur . - pp. [014504-1/4].
Physique
Langues : Anglais (eng)
in Journal of heat transfer > Vol. 132 N° 1 (Janvier 2010) . - pp. [014504-1/4]

Mots-clés :	Intraband transition Interband Electronphonon coupling factor Short pulsed laser heating Electronic band structure
Index. décimale :	536 Chaleur. Thermodynamique
Résumé :	This work examines the effects of photonically induced interband excitations from the d-band to states at the Fermi energy on thermophysical properties in noble metals. The change in the electron population in the d-band and the conduction band causes a change in electron heat capacity and electron-phonon coupling factor, which in turn impacts the evolution of the temperature after pulse absorption and electron thermalization. Expressions for heat capacity and electron-phonon coupling factor are derived for electrons undergoing both inter- and intraband transitions. In noble metals, due to the large d-band to Fermi energy separation, the contributions to electron heat capacity and electron-phonon coupling factor of intra- and interband transitions can be separated. At high absorbed laser fluences and pulse energies greater than the interband transition threshold, the interband and intraband contributions to thermophysical properties differ.
DEWEY :	536
ISSN :	0022-1481
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