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CAMP: Exploring the mesoscopic magnetism of undoped cuprates through nonlinear optics
Add to Calendar 2022-11-07T20:45:00 2022-11-07T21:45:00 UTC CAMP: Exploring the mesoscopic magnetism of undoped cuprates through nonlinear optics Zoom: https://psu.zoom.us/j/96178311702?pwd=bWNHRXE5QUdkbTVEY1F3dFlhR3JvZz09
Start DateMon, Nov 07, 2022
3:45 PM
to
End DateMon, Nov 07, 2022
4:45 PM
Presented By
Kyle Seyler, CalTech
Event Series: CAMP Seminar

Antiferromagnetic (AFM) materials host a rich variety of magnetic phenomena and are appealing for robust high-speed spin-based technologies. Cuprate Mott insulators, the parent compounds of high-temperature superconductors, are particularly intriguing AFM materials owing to their model Heisenberg behavior, strong exchange interactions, and tunability with doping. However, there is limited understanding of their mesoscopic magnetic properties due to the difficulty of achieving local readout of AFM order and imaging of AFM domain structures. In this talk, I will discuss our recent efforts to explore the mesoscopic magnetism of undoped cuprates through nonlinear optics.  I will first give an overview of how optical second-harmonic generation (SHG) can be a powerful probe of magnetism in quantum materials. I will then introduce two closely related undoped cuprate compounds, detail their distinct SHG responses, and show how we can harness this SHG to uncover a variety of interesting mesoscopic magnetic phenomena.