Monopole-limited nucleation of magnetism in Eu2Ir2O7

Giacomo Prando, Prachi Telang, Stephen D. Wilson, Michael J. Graf, and Surjeet Singh
Phys. Rev. B 101, 174435 – Published 22 May 2020
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Abstract

We present an in-depth analysis of muon-spin spectroscopy measurements of Eu2Ir2O7 under the effect of the Eu1xBix isovalent and diamagnetic substitution as well as of external pressure. Our results evidence an anomalous correlation between the magnetic volume fraction and the order parameter only for stoichiometric Eu2Ir2O7, pointing towards highly unconventional properties of the magnetic phase developing therein. We argue that magnetism in Eu2Ir2O7 develops based on the nucleation of magnetic droplets at TN, whose successive growth is limited by the need of a continuous generation of magnetic hedgehog monopoles.

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  • Received 16 March 2020
  • Accepted 7 May 2020

DOI:https://doi.org/10.1103/PhysRevB.101.174435

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Giacomo Prando1,*, Prachi Telang2, Stephen D. Wilson3, Michael J. Graf4, and Surjeet Singh2,5

  • 1Department of Physics, University of Pavia, I-27100 Pavia, Italy
  • 2Department of Physics, Indian Institute of Science Education and Research, Pune 411 008, India
  • 3Department of Materials, University of California, Santa Barbara, California 93106, USA
  • 4Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA
  • 5Center for Energy Sciences, Indian Institute of Science Education and Research, Pune 411 008, India

  • *giacomo.prando@unipv.it

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Issue

Vol. 101, Iss. 17 — 1 May 2020

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