Published 1984
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Spin-orbit relaxation and the Knight shift in small superconducting particles of simple polyvalent metals
- 1. CEA Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France). Section d'Etude des Solides Irradies
- 2. Instituto Politecnico Nacional, Mexico City. Centro de Investigacion
Description
Recently, it has been shown that the most efficient conduction electron spin relaxation mechanism in Al is associated with scattering events to and from certain portions (ridges) of the Fermi surface where the spin-orbit interaction leads to electron wavefunctions which have a substancial admixture of spin up and spin down components. Those ridges arise from intersections of the Fermi surface with Brillouin boundaries and therefore this relaxation mechanism must be common to and prevail in the simple (non-transition) polyvalent metals. Here it is shown that in fact this mechanism accounts for the spin flip processes responsible for the finite Knight shift observed in small Sn and Pb superconducting particles. (Author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Mostrou-se, recentemente, que o mecanismo mais eficiente de relaxacao spin-eletron de conducao no Al esta associado com eventos de espalhamento para e de certas porcoes (cumes) da superficie de Fermi onde a interacao spin-orbita conduz as funcoes de onda que tem uma mistura substancial de componentes de spin para cima e para baixo. Esses cumes surgem das intersecoes da superficie de Fermi com as fronteiras de Brillouin e portanto esse mecanismo de relaxacao deve ser comum e prevalecem nos metais polivalentes (que nao fazem transicao) simples. Mostra-se, aqui, que de fato esse mecanismo da conta dos processos de troca de spin responsaveis para o deslocamento 'Knight' finito observado em pequenas particulas supercondutoras de Sn e Pb. (L.C.)Files
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Additional details
Publishing Information
- Imprint Pagination
- 13 p.
- Report number
- CBPF-NF--028/84
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 16078960
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- COMPARATIVE EVALUATIONS; COMPILED DATA; EXPERIMENTAL DATA; FERMI LEVEL; KNIGHT SHIFT; LATTICE PARAMETERS; LEAD; RELAXATION; SPIN FLIP; TIN
- Descriptors DEC
- DATA; ELEMENTS; ENERGY LEVELS; INFORMATION; METALS; NUMERICAL DATA