2025년 10월 30일(목) 물리학과 콜로퀴움 안내입니다.

연사: 박진수 교수님 (포스텍)

시간: 15시~16시

강연장소: 학산도서관 지하 1층 세미나실

강연제목: Electron-phonon interaction and dynamics from first-principles 

초록: 

When electrons move in a crystal, they interact with lattice vibrations arising from the thermal motion of the atoms—i.e., phonons. This electron-phonon (e-ph) interaction is pervasive in condensed matter, governing phenomena such as charge transport, spin dynamics, and superconductivity. However, e-ph interaction is challenging to predict from a theoretical perspective, as the coupling depends rapidly on the band and momentum of both electrons and phonons. In this talk, I will introduce a first-principles framework for e-ph interaction using localized orbitals, which has become a gold standard for studying e-ph interactions and related physics in a wide range of quantum materials. I will discuss strategies for addressing polar and nonpolar materials, weak to moderate electron correlation, and both spin-collinear and noncollinear magnetism. These advancements uniquely position us to study electron motion in a diverse class of systems, ranging from silicon for conventional semiconductor technology to spin qubits embedded in diamond for quantum information science. Our efforts are implemented in Perturbo, an open-source software package for first-principles electron interactions, charge transport, and ultrafast carrier dynamics.

Host: 김정우 교수님