activity
20142023
most citedReflection symmetric second-order topological insulators and superconductors

1k citations · 3.4k across the 24 of their papers we have counts for

collaborators

25 papers

cond-mat.mes-hall2023★ 6 cited

Distinct Floquet topological classifications from color-decorated frequency lattices with space-time symmetries

Ilyoun Na, Jack Kemp, Robert-Jan Slager +1

We consider nontrivial topological phases in Floquet systems using unitary loops and stroboscopic evolutions under a static Floquet Hamiltonian in the presence of dynamical s…

cond-mat.str-el2022★ 11 cited

Hierarchy of Symmetry Breaking Correlated Phases in Twisted Bilayer Graphene

Robert Polski, Yiran Zhang, Yang Peng +8

Twisted bilayer graphene (TBG) near the magic twist angle of exhibits a rich phase diagram. However, the interplay between different phases and their dependence on tw…

cond-mat.mes-hall2022★ 42 cited

Topological space-time crystal

Yang Peng

We introduce a new class of out-of-equilibrium noninteracting topological phases, the topological space-time crystals. These are time-dependent quantum systems which do not have di…

cond-mat.supr-con2021★ 12 cited

Ascendance of Superconductivity in Magic-Angle Graphene Multilayers

Yiran Zhang, Robert Polski, Cyprian Lewandowski +10

Graphene moire superlattices have emerged as a platform hosting and abundance of correlated insulating, topological, and superconducting phases. While the origins of strong correla…

cond-mat.mes-hall2021★ 17 cited

Universal nonadiabatic energy pumping in a quasiperiodically driven extended system

Zihao Qi, Gil Refael, Yang Peng

The paradigm of Floquet engineering of topological states of matter can be generalized into the time-quasiperiodic scenario, where a lower dimensional time-dependent system maps in…

cond-mat.str-el2021

Interaction-driven Band Flattening and Correlated Phases in Twisted Bilayer Graphene

Youngjoon Choi, Hyunjin Kim, Cyprian Lewandowski +8

Flat electronic bands, characteristic of magic-angle twisted bilayer graphene (TBG), host a wealth of correlated phenomena. Early theoretical considerations suggested that, at the…