Quantum Materials

under Advanced Scattering & Spectroscopy

Kang research group @ Seoul National University, starting 2025.03.

A central theme in quantum materials research is the emergence of new macroscopic properties from the collective interactions between microscopic degrees of freedom. Understanding the exact nature and driving mechanisms of these emergent phenomena is often highly challenging, yet is critical for engineering desired quantum matter properties and harnessing them for functional applications.

Our research group is specialized in tackling this problem by utilizing multiple advanced scattering and spectroscopic techniques, that provide complementary and multifaceted insights into quantum materials. These include:

  • Angle-resolved photoemission spectroscopy resolving fermionic information in solid (electronic structures),

  • Resonant elastic/inelastic X-ray scattering providing bosonic information (orders and excitations),

  • Time-resolved scattering & spectroscopy detecting out-of-equilibrium dynamics, and

  • Spatially-resolved nanospectroscopy measuring domains, defects, and devices.

 

Our research is problem-driven: depending on the quantum material of interest, we identify and utilize the best spectroscopic arsenals to illuminate its underlying physics.

We actively access synchrotrons and X-ray free electron laser facilities worldwide, including ALS (USA), CLS (Canada), DLS (UK), BESSY (Germany), NSLS-II (USA), MAX-IV (Sweden), LCLS (USA), and PAL-XFEL (South Korea).