Optical Probing of Ordering in Solid-State Materials
- PC Department Seminar
- Date: Aug 24, 2023
- Time: 11:00 AM (Local Time Germany)
- Speaker: Feifan Wang
- ETH Zürich
- Location: Building G
- Room: 2.06
- Host: Sebastian Mährlein
Symmetry and its breaking sit at the core of condensed matter physics research and determine the ordering and unique functionalities of solid-state materials. Ultrashort light pulses from visible to THz wavelength ranges offer the opportunity to probe and control the electronic, phononic, magnetic, and even time ordering in those materials.
The related studies are crucial for understanding the microscopic
mechanisms of phenomena such as superconductivity, ferroicity, and
optoelectronics, as well as for achieving ultrafast control of
corresponding devices. In this talk, I will introduce our previous works
of studying the photo-carrier induced ordering, ferroelectric ordering,
and charge density ordering by using nonlinear optical spectroscopy and
imaging techniques. Those studies help us to understand the
fundamentals of the charge carrier protection of dynamically disordered
semiconductors, domain formations advancing thermoelectricity, and the
electron correlation in noncentrosymmetric superconductors.