MIT Physicists Track 2 Electron Phases in Real Time in Erbium Tritelluride
Updated
Updated · Interesting Engineering · Aug 9
MIT Physicists Track 2 Electron Phases in Real Time in Erbium Tritelluride
1 articles · Updated · Interesting Engineering · Aug 9
Summary
MIT researchers used pump-probe lasers to watch electrons in erbium tritelluride break apart and reassemble in real time, capturing how two Charge density wave phases return after disruption.
At about −230°C, the team first “shook” the atomically thin material with one laser pulse, then mapped emitted electrons with a second pulse to reconstruct the recovery of its electronic order.
The dominant phase rebuilt smoothly and uniformly across the sample, while the second, perpendicular phase reappeared in isolated regions that expanded outward instead of emerging everywhere at once.
Erbium tritelluride forms one charge density wave near −8°C and a second near −113°C, creating an electronic checkerboard that lets physicists compare two distinct phase-transition pathways in one material.
The Nature Physics study could sharpen understanding of how competing electronic states such as superconductivity and magnetism emerge and interact in quantum materials.