IAMS Upcoming Activities 原分所學術演講活動
消息來源：原分所
截止日期：2026-10-30
IAMS Lecture
中研院原分所演講公告
| Title | Extracting more information from spin-ARPES |
| Speaker | Prof. Kenta Kuroda Hiroshima University, 黒田健太教授 廣島大學 |
| Time | 10:30 AM, October 30 (Friday), 2026 |
| Venue | CCMS Room 212, IAMS 臺大凝態中心212室 |
| Contact | Dr. Cheng-Tien Chiang ctchiang@as.edu.tw |
| Abstract | Spin- and angle-resolved photoemission spectroscopy (spin-ARPES) is widely used to determine the spin polarization of electronic states. In this seminar, I will discuss two recent developments in spin-ARPES that go beyond conventional spin-polarization measurements. First, I will introduce a phase-resolved approach based on spin interference [1-3]. In spin-orbit-coupled systems, coherent superposition of different ptical transition channels can rotate the photoelectron spin. By measuring the full three-dimensional spin vector, the relative phase between these channels can be extracted, allowing spin-ARPES to be viewed as an nterferometric probe of the complex photoemission response.Second, I will present our recent development of spin-ARPES [4] combined with pump-probe technique at HiSOR, which combines femtosecond optical excitation with three-dimensional spin detection to investigate transient spin-polarized states and ultrafast spin dynamics.Together, these studies illustrate how spin-ARPES can provide information beyond conventional spin-polarization measurements. |