Low-dimensional electronics

Our group studies how electron-electron interactions shape quantum matter in low dimensions. In one and two dimensions, interactions are enhanced and can give rise to many-body phases that are not captured by the band picture of the atomic crystal. We address this experimentally with electronic transport in graphene-based van der Waals heterostructures, in which the dimensionality, the coupling and the interaction strength can be set within a single device.

We follow three connected directions:

• One-dimensional electronic channels: ballistic channels along twist domain walls in bilayer graphene, with tunable interactions.
• Coulomb screening and interaction engineering: in situ control of the interaction strength in van der Waals heterostructures.
• Josephson junctions: superconducting correlations in one-dimensional channels.

Nanophotonic and photocurrent probes, used where transport alone cannot answer a question, complement these directions. See Research Topics and Publications.

Open positions: we are always welcoming applications for PhD students and postdocs.