2 papers
cond-mat.mes-hall2026
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,…
cond-mat.str-el2025
Flux attachment theory of fractional excitonic insulators
Steven Gassner, Ady Stern, C. L. Kane
The search for fractional quantized Hall phases in the absence of a magnetic field has primarily targeted flat-band systems that mimic the features of a Landau level. In an alterna…