报告摘要:
The SQUID-on-tip (SOT) technique, with its high magnetic and thermal sensitivity and nanoscale spatial resolution, offers a powerful platform for probing local thermal and electronic properties in quantum materials. In this seminar, I will introduce the SOT method and discuss its unique capabilities for investigating deviations from Fourier’s law of heat conduction, particularly in the context of phonon hydrodynamics. By enabling direct, non-invasive measurements of temperature  at the nanoscale, SOT can provide critical insights into the emergence of hydrodynamic phonon regimes, where momentum-conserving collisions dominate over resistive scattering. Furthermore, I will explore how this technique could be extended to study the thermal phonon Hall effect where transverse thermal currents arise in response to temperature gradients in the presence of a strong external magnetic fields.

报告人简介:
Dr. Arthur Marguerite is currently a permanent CNRS researcher at LPEM/ESPCI in Paris, France (2022–present). He earned his PhD in Physics at the Laboratoire Pierre Aigrain, ENS Paris, under the supervision of Gwendal Fève in July 2017. After his PhD, he pursued postdoctoral research in Eli Zeldov's group at the Weizmann Institute of Science in Israel (2017–2020) and subsequently in Çağlar Girit's group at the Collège de France (2020–2022). His research interest includes particle interferometry in in quantum Hall effect and scanning SQUID studies of correlated electrons and imaging work and dissipation. Recently, He earned an ERC Starting Grant for the Thermoscopy project (2025–2030). 

邀请人：杨威特聘研究员

联系方式：82648050