ArticleNature materials2025
Terahertz photocurrent probe of quantum geometry and interactions in magic-angle twisted bilayer graphene.
Article in Nature materials, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers.
What it found
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Who cites it
7 citing papers in PubMed.
- Second-Order Synaptic Memory using Inherent Plasticity of Moiré Superlattices.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Correlated insulator Moiré bolometer.Nature communications · 2026Article
- Correlated quantum shift vector of particle-hole excitations.Nature communications · 2026Article
- On-Chip THz-TDS Platform for High-Sensitivity Analysis of Graphene and Thin-Film Conductors.Nano letters · 2026Article
- Sensitive Sub-THz Photodetection in Twisted Graphene with Broad Spectral Response.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Roadmap for Photonics with 2D Materials.ACS photonics · 2025Review
- Unveiling the Miniband Structure of Graphene Moiré Superlattices via Gate-Dependent Terahertz Photocurrent Spectroscopy.ACS nano · 2025Article
Corrections and comments
- Erratum issued
Authors and funding
27 authors.
Funding
Abstract
Moiré materials represent strongly interacting electron systems bridging topological and correlated physics. Despite notable advances, decoding wavefunction properties underlying the quantum geometry remains challenging. Here we utilize polarization-resolved photocurrent measurements to probe magic-angle twisted bilayer graphene, leveraging its sensitivity to the Berry connection that encompasses quantum 'textures' of electron wavefunctions. Using terahertz light resonant with optical transitions of its flat bands, we observe bulk photocurrents driven by broken symmetries and reveal the interplay between electron interactions and quantum geometry. We observe inversion-breaking gapped states undetectable through quantum transport, sharp changes in the polarization axes caused by interaction-induced band renormalization and recurring photocurrent patterns at integer filling factors of the moiré unit cell that track the evolution of quantum geometry through the cascade of phase transitions. The large and tunable terahertz response intrinsic to flat-band systems offers direct insights into the quantum geometry of interacting electrons and paves the way for innovative terahertz quantum technologies.
Identifiers
40128628What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.