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Type: Artigo de periódico
Title: Electron Spin Resonance Study Of The Lain(3-x)sn(x) Superconducting System.
Author: Bittar, E M
Adriano, C
Giles, C
Rettori, C
Fisk, Z
Pagliuso, P G
Abstract: The LaIn(3-x)Sn(x) alloy system is composed of superconducting Pauli paramagnets. For LaIn3 the superconducting critical temperature T(c) is approximately 0.7 K and it shows an oscillatory dependence as a function of Sn substitution, presenting its highest value T(c) ≈ 6.4 K for the LaSn3 end member. The superconducting state of these materials was characterized as being of the conventional type. We report our results for Gd3+ electron spin resonance measurements in the LaIn(3-x)Sn(x) compounds as a function of x. We show that the effective exchange interaction parameter J(fs) between the Gd3+ 4f local moment and the s-like conduction electrons is almost unchanged by Sn substitution and observe microscopically that LaSn3 is a conventional superconductor.
Rights: fechado
Identifier DOI: 10.1088/0953-8984/23/45/455701
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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