aiqbench takeQuantum Computing

This study isolates hot electron effects from lattice vibrations in twisted bilayer graphene, clarifying that electronic contributions significantly limit current even when phonon scattering is dominant. By using selective 0.14-terahertz radiation to decouple these thermal states, researchers have identified a previously obscured mechanism governing resistance at the "magic angle." This fundamental insight into charge carrier behavior is critical for advancing the design of next-generation quantum electronic devices.

Source coveringQuantum Zeitgeist

What this isA model's reading of the article and related coverage, written for aiqbench. Not the publisher's words.

NUS I-FIM links quantum electrons, not vibrations, to graphene current limit

Quantum ZeitgeistSeptember 17, 20265 min read

NUS I-FIM research clarifies what hinders current in twisted bilayer graphene, separating hot electron effects from atomic lattice vibrations.

Researchers for Functional Intelligent Materials (I-FIM) at the National University of Singapore have, for the first time, separated the effects of electrons and atomic lattice vibrations on electrical resistance in twisted bilayer graphene. Using 0.14-terahertz radiation to selectively heat electrons while keeping the surrounding lattice nearly unchanged, the team observed resistance increases of several kilo-ohms in devices twisted near the “magic angle.” “Conventional transport measurements heat the electrons and the lattice together, so their fingerprints are superimposed,” said Assistant Professor Denis Bandurin, a Principal Investigator at I-FIM, who led the study. Published August 13, 2026, in Nature Communications, this technique reveals a strong electronic contribution…

Excerpt shown under the publisher's RSS terms · 105 words · full text and figures are on the publisher's site

Read at Quantum Zeitgeist ↗Ask about this article