Weekly Seminar 2: Magneto-optic Effects and Opto-spintronics Based on 2D Antiferromagnetic Semiconductor

About the Speaker

Sheng Liu
Specially Appointed Associate Professor
School of Physics and Technology, Wuhan University

Dr. Liu received his bachelor's and master's degrees from the University of Science and Technology Beijing, and his Ph.D. from Nanyang Technological University, Singapore.

His research is dedicated to investigating low-dimensional quantum materials using cutting-edge spectroscopic techniques, focusing on their optoelectronic and magneto-optical properties to develop novel spin-optoelectronic devices.

He has published over 40 papers in leading international academic journals, with 13 receiving over 100 citations each. As first or corresponding author, he has published significant works in high-impact journals including Nature Communications (2), Science Advances (1), Physical Review Letters (1), Advanced Materials (2), and ACS Nano (3). His work has accumulated over 3,600 citations with an H-index of 32.

Seminar Details

Title: Magneto-optic Effects and Opto-spintronics Based on 2D Antiferromagnetic Semiconductors

Date: Friday, April 24, 2026

Time: 14:30 – 17:30

Venue: Semiar Room, Building B, Innovation and Entrepreneurship Center, HBUT

 Abstract

Two-dimensional (2D) antiferromagnetic semiconductors offer a revolutionary platform to explore both terahertz (THz) spin waves (magnons) and visible optical signals (excitons), paving the way for next-generation ultra-low-dissipation opto-spintronics.

This talk will explore the rich magneto-optical effects discovered in 2D antiferromagnetic semiconductors. The speaker will discuss the intricate spin-lattice strong coupling in the THz regime and its modulation, and show how interlayer magnetic orders profoundly influence exciton energy levels.

Translating these fundamental insights into practical applications, the talk will showcase the successful realization of several novel spin-optoelectronic prototype devices, including room-temperature 2D VCSELs and spin-LEDs. These milestones provide crucial physical insights and establish programmable material platforms for next-generation highly efficient quantum interconnects and opto-spintronic technologies.

 Key Topics

• Magneto-optical effects in 2D antiferromagnetic semiconductors

• Spin-lattice strong coupling in the THz regime

• Interlayer magnetic order and exciton energy level modulation

• Room-temperature 2D VCSELs and spin-LEDs

• Programmable platforms for quantum interconnects and opto-spintronics

 Who Should Attend

Whether you are an undergraduate student, graduate student, postdoc, faculty member, or simply someone fascinated by 2D materials, spintronics, or quantum physics — this seminar is for you. No prior expertise is required.

✅ All backgrounds welcome
✅ Open to everyone interested in research
✅ Opportunity to ask questions and discuss science

 Come curious, leave inspired. All are welcome!