Conduction Centroid Reconfiguration in 2D Multilayer Transistors
Min-Kyu JOO
Mercredi 2 Juillet 2025 à 9h30
Résumé:
Two-dimensional van der Waals heterostructures have attracted considerable interest as potential platforms for neuromorphic computing, analog reconfiguration, and radio-frequency applications. Despite this potential, the electrically driven redistribution of the conduction path in multilayer configurations remains insufficiently explored. In this presentation, I introduce transistors based on two-dimensional multilayers including their heterostructures that display two distinct transconductance peaks under particular biasing conditions. Transconductance, which determines how effectively a device converts voltage signals into current, is central to performance metrics such as gain, bandwidth, and noise. Whereas conventional devices exhibit a single transconductance maximum at channel onset, our devices reveal dual maxima that arise from the progressive shift of the conduction centroid between different channel layers. This internal reconfiguration occurs without any physical alteration to the structure and serves as direct evidence of layer-resolved transport modulation. These findings demonstrate the feasibility of embedding multi-threshold functionality within a single device, providing a promising route for scalable neuromorphic implementations using van der Waals materials.
Infos date
Mercredi 2 Juillet 2025 à 9:30
Infos lieu
Salle BELLEDONNE & VIDEOCONFERENCE