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Type: Artigo de periódico
Title: Magnetic structure and fluctuations of Gd2IrIn8: A resonant x-ray diffraction study
Author: Granado, E
Pagliuso, PG
Giles, C
Lora-Serrano, R
Yokaichiya, F
Sarrao, JL
Abstract: Resonant x-ray diffraction measurements on Gd2IrIn8 reveal an antiferromagnetic structure below T-N=40.8 K with wave vector zeta=(1/2,0,0) and the Gd moments lying in the tetragonal ab plane, indicating partly frustrated exchange interactions. Strong (over three orders of magnitude) dipolar resonant enhancements of the magnetic reflections were observed at both Gd L-II and L-III edges, indicating a relatively high magnetic polarization of the Gd 5d levels. Three-dimensional magnetic fluctuations are evidenced below T-N, while measurements taken slightly above T-N are consistent with two coexisting length scales for the magnetic correlations. Implications of these results for the physics of CenMmIn3n+2m (M=Co, Rh, or Ir) heavy-fermion superconductors are discussed.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.69.144411
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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