Field-tuned critical fluctuations in YFe2Al10: Evidence from magnetization, 27Al NMR, and NQR investigations

P. Khuntia, A. M. Strydom, L. S. Wu, M. C. Aronson, F. Steglich, M. Baenitz

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We report magnetization, specific heat, and NMR investigations on YFe 2Al10 over a wide range of temperature and magnetic field and zero field (NQR) measurements. Magnetic susceptibility, specific heat, and spin-lattice relaxation rate divided by T(1/T1T) follow a weak power law (∼T-0.4) temperature dependence, which is a signature of the critical fluctuations of Fe moments. The value of the Sommerfeld-Wilson ratio and the linear relation between 1/T1T and χ suggest the existence of ferromagnetic correlations in this system. No magnetic ordering down to 50 mK in Cp(T)/T and the unusual T and H scaling of the bulk and NMR data are associated with a magnetic instability which drives the system to quantum criticality. The magnetic properties of the system are tuned by field wherein ferromagnetic fluctuations are suppressed and a crossover from quantum critical to Fermi-liquid behavior is observed with increasing magnetic field.

Original languageEnglish
Article number220401
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number22
DOIs
Publication statusPublished - 6 Dec 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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