Electron spin resonance of the intermetallic antiferromagnet EuIn2As2

P. F. S. Rosa, C. Adriano, T. M. Garitezi, R. A. Ribeiro, Z. Fisk, and P. G. Pagliuso
Phys. Rev. B 86, 094408 – Published 7 September 2012

Abstract

We present electron spin resonance (ESR) measurements in single-crystalline samples of EuIn2As2 grown using the In-flux method. This compound crystallizes in a hexagonal P6(3)/mmc structure and presents antiferromagnetic (AFM) ordering below TN=16 K. In the paramagnetic state, a single Eu2+ Dysonian ESR line with nearly temperature-independent g-factor and linewidth is observed, indicating the absence of Korringa-like relaxation of the Eu2+ ions. Approaching the AFM transition, we observe an anisotropic g-shift and a linewidth broadening which has a maximum at TN, suggesting that the short-range AFM correlation dominates the spin dynamics of the Eu2+ spins in this temperature range. Our results are discussed based on complementary data (magnetic susceptibility, heat capacity, and electrical resistivity measurements) that provide further details about the global macroscopic physical properties of the EuIn2As2 intermetallic compound.

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  • Received 4 July 2012

DOI:https://doi.org/10.1103/PhysRevB.86.094408

©2012 American Physical Society

Authors & Affiliations

P. F. S. Rosa1,3, C. Adriano1,3, T. M. Garitezi1, R. A. Ribeiro2, Z. Fisk3, and P. G. Pagliuso1,3

  • 1Instituto de Física “Gleb Wataghin”, Universidade Estadual de Campinas, Campinas SP 13083-859, Brazil
  • 2Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Santo Andre SP 09210-170, Brazil
  • 3University of California, Irvine, California 92697, USA

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Issue

Vol. 86, Iss. 9 — 1 September 2012

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