Probing a spin-glass state in SrRuO3 thin films through higher-order statistics of resistance fluctuations

Gopi Nath Daptary, Chanchal Sow, P. S. Anil Kumar, and Aveek Bid
Phys. Rev. B 90, 115153 – Published 29 September 2014

Abstract

The complex perovskite oxide SrRuO3 shows intriguing transport properties at low temperatures due to the interplay of spin, charge, and orbital degrees of freedom. One of the open questions in this system is regarding the origin and nature of the low-temperature glassy state. In this paper we report on measurements of higher-order statistics of resistance fluctuations performed in epitaxial thin films of SrRuO3 to probe this issue. We observe large low-frequency non-Gaussian resistance fluctuations over a certain temperature range. Our observations are compatible with that of a spin-glass system with properties described by hierarchical dynamics rather than with that of a simple ferromagnet with a large coercivity.

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  • Received 7 March 2014
  • Revised 17 September 2014

DOI:https://doi.org/10.1103/PhysRevB.90.115153

©2014 American Physical Society

Authors & Affiliations

Gopi Nath Daptary, Chanchal Sow, P. S. Anil Kumar, and Aveek Bid*

  • Department of Physics, Indian Institute of Science, Bangalore 560012, India

  • *aveek.bid@physics.iisc.ernet.in

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Issue

Vol. 90, Iss. 11 — 15 September 2014

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