Optimal spectrum for the borocarbides YNi2B2C and LuNi2B2C

Authors
Manalo, S Schachinger, E
Citation
S. Manalo et E. Schachinger, Optimal spectrum for the borocarbides YNi2B2C and LuNi2B2C, J L TEMP PH, 123(3-4), 2001, pp. 149-163
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LOW TEMPERATURE PHYSICS
ISSN journal
00222291 → ACNP
Volume
123
Issue
3-4
Year of publication
2001
Pages
149 - 163
Database
ISI
SICI code
0022-2291(200105)123:3-4<149:OSFTBY>2.0.ZU;2-1
Abstract
The concept of an optimal electron-phonon interaction spectral density as a n Einstein spectrum which allows to describe all physical properties of a s uperconductor in an optimal way is developed from Carbotte's original defin ition of an optimum spectrum. It is shown, using the borocarbides YNi2B2C a nd LuNi2B2C as examples, that such a concept is meaningful even for anisotr opic systems. An Einstein spectrum is sufficient for clean-limit systems, a 2 delta -peak spectrum is better suited for anisotropic systems with impur ities.