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Title: Electron spin resonance of Gd{sup 3+} in the normal state of RNi{sub 2}B{sub 2}C (R=Y,Lu)

Abstract

Electron spin resonance (ESR) of Gd{sup 3+} in the normal state (T{gt}T{sub c}) of R{sub 1{minus}x}Gd{sub x}Ni{sub 2}B{sub 2}C (R=Y,Lu) is reported. The results show that the exchange coupling between the rare-earth localized magnetic moment and the conduction electrons depends on the conduction electrons momentum transfer ({vert_bar}{bold k}{sub F}{sup in}{minus}{bold k}{sub F}{sup out}{vert_bar}=q), i.e., J{sub fs}(q). The temperature dependence of the ESR linewidth yields a value for one of the exchange parameters, {l_angle}J{sub fs}{sup 2}(q){r_angle}{sub E{sub F}}{sup 1/2}, which is in agreement with that estimated from the slope of the initial linear decrease of T{sub c} by the Gd{sup 3+} impurities. These results indicate that the R{sub 1{minus}x}Gd{sub x}Ni{sub 2}B{sub 2}C (R=Y,Lu) compounds behave as conventional BCS superconductors, in agreement with previous reports. {copyright} {ital 1998} {ital The American Physical Society}

Authors:
; ;  [1];  [2]; ;  [3]
  1. Instituto de Fisica GlebWataghin, UNICAMP, 13083-970, Campinas-SP (Brazil)
  2. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
  3. CBPF, R. Xavier Sigaud 150, 22290-180, Rio de Janeiro (Brazil)
Publication Date:
OSTI Identifier:
568336
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 57; Journal Issue: 6; Other Information: PBD: Feb 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; YTTRIUM COMPOUNDS; LUTETIUM COMPOUNDS; NICKEL COMPOUNDS; GADOLINIUM COMPOUNDS; GADOLINIUM IONS; ELECTRON SPIN RESONANCE; YTTRIUM CARBIDES; NICKEL CARBIDES; BORON CARBIDES; LUTETIUM CARBIDES; GADOLINIUM CARBIDES; MAGNETIC MOMENTS; IMPURITIES; BCS THEORY; EXCHANGE INTERACTIONS; MAGNETIZATION

Citation Formats

Pagliuso, P G, Rettori, C, Oseroff, S B, Canfield, P C, Baggio-Saitovitch, E M, and Sanchez, D. Electron spin resonance of Gd{sup 3+} in the normal state of RNi{sub 2}B{sub 2}C (R=Y,Lu). United States: N. p., 1998. Web. doi:10.1103/PhysRevB.57.3668.
Pagliuso, P G, Rettori, C, Oseroff, S B, Canfield, P C, Baggio-Saitovitch, E M, & Sanchez, D. Electron spin resonance of Gd{sup 3+} in the normal state of RNi{sub 2}B{sub 2}C (R=Y,Lu). United States. https://doi.org/10.1103/PhysRevB.57.3668
Pagliuso, P G, Rettori, C, Oseroff, S B, Canfield, P C, Baggio-Saitovitch, E M, and Sanchez, D. Sun . "Electron spin resonance of Gd{sup 3+} in the normal state of RNi{sub 2}B{sub 2}C (R=Y,Lu)". United States. https://doi.org/10.1103/PhysRevB.57.3668.
@article{osti_568336,
title = {Electron spin resonance of Gd{sup 3+} in the normal state of RNi{sub 2}B{sub 2}C (R=Y,Lu)},
author = {Pagliuso, P G and Rettori, C and Oseroff, S B and Canfield, P C and Baggio-Saitovitch, E M and Sanchez, D},
abstractNote = {Electron spin resonance (ESR) of Gd{sup 3+} in the normal state (T{gt}T{sub c}) of R{sub 1{minus}x}Gd{sub x}Ni{sub 2}B{sub 2}C (R=Y,Lu) is reported. The results show that the exchange coupling between the rare-earth localized magnetic moment and the conduction electrons depends on the conduction electrons momentum transfer ({vert_bar}{bold k}{sub F}{sup in}{minus}{bold k}{sub F}{sup out}{vert_bar}=q), i.e., J{sub fs}(q). The temperature dependence of the ESR linewidth yields a value for one of the exchange parameters, {l_angle}J{sub fs}{sup 2}(q){r_angle}{sub E{sub F}}{sup 1/2}, which is in agreement with that estimated from the slope of the initial linear decrease of T{sub c} by the Gd{sup 3+} impurities. These results indicate that the R{sub 1{minus}x}Gd{sub x}Ni{sub 2}B{sub 2}C (R=Y,Lu) compounds behave as conventional BCS superconductors, in agreement with previous reports. {copyright} {ital 1998} {ital The American Physical Society}},
doi = {10.1103/PhysRevB.57.3668},
url = {https://www.osti.gov/biblio/568336}, journal = {Physical Review, B: Condensed Matter},
number = 6,
volume = 57,
place = {United States},
year = {1998},
month = {2}
}