Imaging scale-invariant magnetic textures in a strongly correlated oxide

ORAL

Abstract

The electronic ground state of correlated electron systems, often manifests a granular texture across a broad range of length scales. Antiferromagnetic order is a common instability of these materials, however, its nanoscale spatial organization has not been systematically studied. In this talk, I will present our recent result using a resonant soft X-ray scattering nanoprobe to image the bulk magnetic landscape in NdNiO3 thin films. Our measurements provide direct evidence for a highly textured magnetic fabric, that further exhibits return memory effects across the Neel transition. The scale-free distribution of antiferromagnetic domains and its non-integral dimensionality, together reveal an unprecedented magnetic fractal geometry near criticality, which reflects the interplay between electronic correlations and an intrinsic local parameter. Our observations expose new essential details of the nanoscale anatomy of strongly correlated electronic systems.

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Presenters

  • Jiarui Li

    Massachusetts Institute of Technology, Department of Physics, Massachusetts Institute of Technology

Authors

  • Jiarui Li

    Massachusetts Institute of Technology, Department of Physics, Massachusetts Institute of Technology

  • Jonathan Pelliciari

    Massachusetts Institute of Technology, Department of Physics, Massachusetts Institute of Technology

  • Abraham Levitan

    Department of Physics, Massachusetts Institute of Technology, Massachusetts Institute of Technology

  • Claudio Mazzoli

    Brookhaven National Laboratory, NSLS-II, Brookhaven National Laboratory, National Synchrotron Light Source II, Brookhaven National Laboratory, BNL, Brookhaven National Lab

  • Sara Catalano

    University of Geneva, Department of Quantum Matter Physics, University of Geneva

  • Forrest Simmons

    Department of Physics and Astronomy, Purdue University

  • Jerzy T. Sadowski

    Brookhaven National Lab, Center for Functional Nanomaterials, Brookhaven National Laboratory, Center for Functional Nanomaterials, Center for Functional Nanomaterials, Brookhaven National Lab

  • Marta Gibert

    Physik-Institut, University of Zurich, Physik Institut, University of Zurich, University of Geneva, Department of Quantum Matter Physics, University of Geneva, University of Zurich

  • Erica Carlson

    Purdue University, Department of Physics and Astronomy, Purdue University

  • Jean-Marc Triscone

    University of Geneva, Department of Quantum Matter Physics, University of Geneva

  • Stuart B Wilkins

    Brookhaven National Laboratory, NSLS-II, Brookhaven National Laboratory, National Synchrotron Light Source II, Brookhaven National Laboratory, BNL

  • Riccardo Comin

    Massachusetts Institute of Technology, Massachusetts Institute of Technology, Department of Physics, Department of Physics, Massachusetts Institute of Technology, Stuart Blussom Quantum Matter Institute, University of British Columbia