93 citations · 332 across the 7 of their papers we have counts for
5 papers · 1 filter
Gate-tunable heavy fermion quantum criticality in a moiré Kondo lattice
Ajesh Kumar, Nai Chao Hu, Allan H. MacDonald +1
We propose a realization of Kondo-lattice physics in moiré superlattices at the interface between a WX homobilayer and MoX monolayer (where X=S,Se). Under appropriate gatin…
Lattice Collective Modes from a Continuum Model of Magic-Angle Twisted Bilayer Graphene
Ajesh Kumar, Ming Xie, A. H. MacDonald
We show that the insulating states of magic-angle twisted bilayer graphene support a series of collective modes corresponding to local particle-hole excitations on triangular latti…
Fractal non-Fermi liquids from moiré-Hofstadter phonons
Ajesh Kumar, Zihan Cheng, Andrew C. Potter
We theoretically explore 2d moiré heterostructures in lattice-commensurate magnetic fields as platforms for quantum simulation of a paradigmatic model of non-Fermi liquid physics:…
Symmetry enforced fractonicity and quantum crystal melting
Ajesh Kumar, Andrew C. Potter
Fractons are particles that cannot move in one or more directions without paying energy proportional to their displacement. Here, we introduce the concept of symmetry enforced frac…
String order parameters for 1d Floquet Symmetry Protected Topological Phases
Ajesh Kumar, Philipp T. Dumitrescu, Andrew C. Potter
Floquet symmetry protected topological (FSPT) phases are non-equilibrium topological phases enabled by time-periodic driving. FSPT phases of 1d chains of bosons, spins, or qubits h…