Quantum Spin Dynamics Laboratory
We are a condensed-matter theory group in the Department of Physics at KAIST with a particular focus on quantum spin dynamics. We study fundamental physics of magnetism and superconductivity as well as their technological applications in practical fields such as spintronics and neuromorphic computing. Many of our research involve topological phenomena including the dynamics of topological solitons and the identification of novel topological phases. Here are a few keywords describing our research topics:
Spintronics/magnonics/skyrmionics in ordered quanum materials such as ferromagnets and superconductors
Quantum magnetism
Spin superfluids and magnon Bose-Einstein Condensation (BEC)
Two-dimensional quantum materials
Charge/spin/heat transport in superfluids and superconductors
Dynamics of topological magnetic solitons such as domain walls and skyrmions
Dynamics of topological superconducting solitons such as vortices
Topological phases such as topological insulators and topological superconductivity
The theoretical frameworks that we use frequently are the following:
Classical and quantum field theory
Symmetry-based phenomenology of collective dynamics
Keldysh formalism for nonequilibrium transport phenomena
Path-integral formalism for quantum dynamics
Topological band theory of magnons and electrons
Landau-Lifshitz-Gilbert equation for magnetic dynamics
Our work is supported by
Brain Pool Plus Program through the National Research Foundation of Korea funded by the Ministry of Science and ICT (2020H1D3A2A03099291)
Samsung Science and Technology Foundation (SSTF-BA2202-04)
National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (2021R1C1C1006273)
National Research Foundation of Korea funded by the Korea Government via the SRC Center for Quantum Coherence in Condensed Matter (RS-2023-00207732).