5 papers
Extrinsic quantum geometry in the quadrupolar bulk photovoltaic effect
Steven Gassner, Swati Chaudhary, Martin Claassen
The bulk photovoltaic effect has become a valuable probe of the quantum geometry of Bloch bands. While it is restricted to inversion-broken systems within the dipole approximation,…
Light-induced pseudo-magnetic fields in three-dimensional topological semimetals
Arpit Raj, Swati Chaudhary, Martin Rodriguez-Vega +3
In this work, we show that suitably designed spatially varying linearly polarized light provides a versatile route to generate and control pseudo-magnetic fields in Weyl semimetals…
Giant Shift Current in Electrically-Tunable Superlattice Bilayer Graphene
Nabil Atlam, Swati Chaudhary, Arpit Raj +4
Recent introduction of superlattice potentials has opened new avenues for engineering tunable electronic band structures featuring topologically nontrivial moiré-like bands. Here…
Pseudo-chiral phonon splitting from octupolar magnetic order
Ruairidh Sutcliffe, Kathleen Hart, Swati Chaudhary +1
Motivated by the recent discovery of anomalously large magnetic response of chiral phonons in dipolar magnets, we explore an extension to study Einstein quantum phonon modes couple…
Nonlinear optical responses and quantum geometry in rhombohedral trilayer graphene
Abigail Postlewaite, Arpit Raj, Swati Chaudhary +1
We theoretically study the nonlinear optical response of ABC trilayer graphene with inversion symmetry broken by the application of a displacement field perpendicular to the trilay…