Full-field imaging of the charge density wave structure using Dark-field X-ray microscopy

ORAL

Abstract

Charge density waves (CDW) and their local structure have been studied using a variety of imaging techniques [1, 2, 3]. However, these studies are usually limited to the sample surface and field-of-view of a few hundred nanometers, which makes the connection between the local domain structure and the macroscopic physical properties more challenging. The newly developed Dark-Field X-ray Microscopy (DFXM) is a full-field imaging technique which shows promise results for the study of defects in crystalline materials [4], structural phase transitions [5], and neuromorphic thin-film devices [6] in real-space with larger field-of-view and high resolution. Here, we use DFXM to explore the correlation between crystalline defects and CDW domain structure in the material (Sr0.4Ca0.6)3Rh4Sn13. Our preliminary analysis shows important orientation distribution in the mosaicity maps around the qCDW = (9/2 7/2 0) CDW superstructure peak, which might be connected to domain boundaries.

* This work was financed in part by the Conselho Nacional de Desenvlovimento Científico e Tecnológico (CNPq).This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001.Work at Los Alamos National Laboratory (LANL) was performed under the auspices of the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering.

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Publication: [1] Z. Z. Wang et al., Phys. Review B 67, 12, 121401 (2003).
[2] Y. Hu et al., Nat. Communications 13, 1, 445 (2022).
[3] D. Sakabe et al., npj Quant. Mater 2, 22 (2017).
[4] L. E. Dresselhaus-Marais et al., Sci. Adv.7, eabe8311 (2021).
[5] J. Plumb et al., https://doi.org/10.48550/arXiv.2211.09247 (2022).
[6] E. Kisiel et al., https://doi.org/10.48550/arXiv.2309.15712 (2023)

Presenters

  • Fellipe B Carneiro

    Brazilian Center for Research in Physics

Authors

  • Fellipe B Carneiro

    Brazilian Center for Research in Physics

  • Elliot Kisiel

    University of California, San Diego, University of California, Davis

  • Zahir Islam

    Argonne National Laboratory

  • Priscila Rosa

    Los Alamos National Laboratory

  • Sean M Thomas

    Los Alamos National Laboratory, Los Alamos National Laboratory, Los Alamos, NM87545, USA

  • Eduardo M Bittar

    Brazilian Center for Research in Physics