Fabrication & Scanning Tunneling Microscopy(STM) Analysis of Semiconductor Moiré Materials
Michael F. Crommie, Professor
Physics
Closed. This professor is continuing with Fall 2024 apprentices on this project; no new apprentices needed for Spring 2025.
Moiré materials are a class of materials prepared by twisting two atomic materials on top of each other. These classes of materials have become a preferred platform for studying correlated phases due to their tunability of correlation through the moiré period. For example, non-conventional superconductivity, correlated insulating states, quantum anomalous Hall effect, and fractional Chern insulating states have been predicted and observed experimentally. Using scanning tunneling microscopy, we will develop a deeper understanding of the local electronic states, and understanding the nature of these exotic phases of matter. This research project aims to fabricate moiré material nano-devices to study such correlated states using STM.
Role:
The student will learn standard 2D material nanofabrication methods, including mechanical exfoliation, polymer-assisted stacking of 2D materials, and high-temperature annealing. Furthermore, the candidate will acquire expertise in independently fabricating devices optimized for STM analysis. Later on, the student will progress fabricating devices with advanced device geometries. Ultimately, the student will actively participate in STM measurement of these fabricated devices.
Qualifications: Required: A team player, a basic understanding of quantum mechanics, attention to detail, scientific curiosity
Good to have: Experience with basic nanofabrication methods, prior condensed matter research experience
Day-to-day supervisor for this project: Dhanvanth Balakrishnan, Graduate Student
Hours: 9-11 hrs
Mathematical and Physical Sciences Engineering, Design & Technologies