PhD Candidate, Princeton University
Hi there! I’m a PhD student in the group of Prof. Ali Yazdani at Princeton. My current research uses scanning tunneling microscopy and spectroscopy to study low-dimensional systems.
During my undergraduate studies, I worked in Prof. Joshua Folk’s Quantum Devices Group, where I led experiments on correlated and topological states in two-dimensional materials.
01
The ability to systematically assemble two-dimensional materials creates new opportunities to engineer quantum states and tunable electronic devices. A small rotational misalignment between neighboring atomic layers produces a moiré pattern that reshapes the electronic properties of graphene.
02
In a dilute two-dimensional electron gas, Coulomb interactions can stabilize a Wigner crystal. We observed a generalized anomalous Hall crystal in twisted bilayer–trilayer graphene whose formation is seeded by the moiré potential.
The crystal quadruples the moiré unit-cell area while exhibiting an integer quantum anomalous Hall effect, pointing to twisted graphene as a promising platform for new correlated and topological phenomena.
Su, R., Waters, D. et al. Nature 637, 1084–1089 (2025) ↗
03
Moiré materials host correlated and topological states arising from flat electronic bands with nontrivial quantum geometry. We studied twisted graphene multilayers assembled from M- and N-layer Bernal-stacked flakes.
The layer number provides a systematic way to tune both the moiré bands and the screening environment.
Waters, D., Su, R., Thompson, E. et al. Nature Communications 15, 10552 (2024) ↗
04
We discovered that proximity to few-layer WSe2 stabilizes superconductivity in twisted double bilayer graphene. The result contributes to the emerging relationship between electronic states with a tendency toward isospin polarization and those conducive to superconductivity.
Su, R. et al. Nature Materials 22, 1332–1337 (2023) ↗02
It was fun catching up with old friends at the March Meeting in Denver! We reported attempts to capture a sliding Wigner crystal under the STM. Abstract ↗
Our work on Chern insulators at integer and fractional filling in moiré pentalayer graphene is now in Physical Review X ↗.
Our report of new topological electronic crystals in twisted graphene is now in Nature ↗. A huge thank you to everyone involved!
Our work on topological flat bands in the tN+M graphene family is now in Nature Communications ↗.
“Interplay of electronic crystals with integer and fractional Chern insulators in moiré pentalayer graphene” is now on arXiv ↗.
“Generalized anomalous Hall crystals in twisted bilayer–trilayer graphene” is now on arXiv ↗.
I graduated from UBC with a Bachelor of Applied Science in Engineering Physics ↗.
“Topological flat bands in a family of multilayer graphene moiré lattices” is now on arXiv ↗.
At the APS March Meeting in Minneapolis, I reported a possible Josephson-like effect in an orbital ferromagnet. Our collaborators at UW reported on topological states in tM+N graphene. Abstract ↗
I won first prize in the poster session at SBQMI’s International Scientific Advisory Board meeting.
Our superconductivity work was published in Nature Materials ↗.
I attended the CIFAR Quantum Materials ↗ spring school in Montréal and presented a poster on the electronic phases of twisted double bilayer graphene on WSe2.
I gave a talk at the APS March Meeting in Las Vegas reporting our discovery of superconductivity in twisted double bilayer graphene. Abstract ↗