Time: 14:00-15:30 PM, Thur, Feb 29th, 2024

Host: Dr. Lei Sun, PI of School of Science, Westlake University

Venue:Room E10-315, Yungu Campus, Westlake University

Prof. Jun Zhang

Institute of Semiconductors, CAS

Speaker：

Dr. Jun Zhang is a professor at the Institute of Semiconductors, Chinese Academy of Sciences and University of Chinese Academy of Sciences. He has made a series of original contributions in the fields of semiconductor optical refrigeration, exciton optomechanics, and spin-phonon coupling. He has published over 120 academic papers in journals including Nature, Nature Photonics, and Nature Communications, with more than 9,000 citations and an H-index of 46. In 2004, he obtained his bachelor's degree in physics from Inner Mongolia University and earned his Ph.D. from the Institute of Semiconductors, Chinese Academy of Sciences in 2010. From 2010 to 2015, he conducted post-doctoral research at Nanyang Technological University in Singapore. In 2015, he joined the Institute of Semiconductors at the Chinese Academy of Sciences through the national Young QR Plan, received the Beijing Outstanding Young Scientist award in 2018, and won the Nano Research Young Innovators Award in 2021. He is currently the deputy director of the State Key Laboratory of Superlattices and Microstructures, a committee member of the Optical Scattering professional committee of the Chinese Physical Society, and serves on the editorial boards of journals such as the "Journal of Light Scattering" and the "Journal of Semiconductors".

Abstract:

Phonons are the quanta of lattice vibrations in solids, and the interaction of phonons with other degrees of freedom has a crucial impact on the electronic transport, optical response, and thermal conductivity of semiconductor materials. As the size of semiconductor devices is reduced, the physical properties of phonons and the electron-phonon coupling become even more significant to device performance. In this report, I mainly introduce our recent progress in the detection and manipulation of the interactions between phonons and electrons, defects, and spins in low-dimensional semiconductors. This includes research advancements in phonon-exciton coupling, phonon-spin coupling, and laser cooling of phonons.

Contact:

School of Science, Changdan Liao Email: liaochangdan@westlake.edu.cn