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A Magnon Scattering Platform

ORAL

Abstract

Scattering experiments have revolutionized our understanding of nature. Examples include the discovery of the nucleus, crystallography, and electron microscopy. Scattering techniques differ by the type of the particles used, the interaction these particles have with target materials and the range of wavelengths used. Here, we demonstrate a new 2-dimensional table-top scattering platform for exploring magnetic properties of materials on mesoscopic length scales. Coherent magnons are launched and scattered off a magnetic target. The scattered waves are then recorded using a scanning NV center magnetometer (1, 2) that allows sub-wavelength imaging and operation under conditions ranging from cryogenic to ambient environment. While most scattering platforms measure only the intensity of the scattered waves, our imaging method allows for spatial determination of both amplitude and phase of the scattered waves thereby allowing for a reconstruction of the target scattering potential. Our results (3) establish magnon scattering experiments as a new platform for studying correlated many-body systems.
1. T. X. Zhou et al., APL. 111, 163106 (2017).
2. L. Xie et al., Advanced Materials. 30, 1705501 (2018).
3. T. X. Zhou et al., arXiv:2004.07763.

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Presenters

  • Tony Zhou

    Harvard University, Massachusetts Institute of Technology MIT

Authors

  • Tony Zhou

    Harvard University, Massachusetts Institute of Technology MIT

  • Joris Carmiggelt

    Delft University of Technology, Harvard University

  • Lisa Gachter

    Harvard University

  • Ilya Esterlis

    Harvard University, Department of Physics, Harvard University

  • Dries Sels

    Harvard University, Physics, New York University

  • Rainer Stohr

    Harvard University

  • Chunhui Du

    Harvard University, University of California, San Diego

  • Daniel Fernandez

    Harvard University

  • Joaquin Rodriguez-Nieva

    Harvard University

  • Felix Buettner

    Massachusetts Institute of Technology

  • Eugene Demler

    Harvard University, Department of Physics, Harvard University

  • Amir Yacoby

    Department of Physics, Harvard University, Harvard University