3 papers
cond-mat.mtrl-sci2026
Influence Functional Approach to Non-Perturbative Exciton Binding Renormalization from Phonons
Rohit Rana, Eric R. Heller, Antonios M. Alvertis +2
We construct a many-body model Hamiltonian to capture how phonons renormalize exciton binding as a function of temperature. By using the GW approximation and density functional per…
cond-mat.mtrl-sci2025
Theoretical insights into the role of lattice fluctuations on the excited behavior of lead halide perovskites
Yoonjae Park, Rohit Rana, Daniel Chabeda +2
Lead halide perovskites have been extensively studied as a class of materials with unique optoelectronic properties. A fundamental aspect that governs optical and electronic behavi…
cond-mat.mtrl-sci2025
On the interplay of electronic and lattice screening on exciton binding in two-dimensional lead halide perovskites
Rohit Rana, David T. Limmer
We use path integral Monte Carlo to study the energetics of excitons in layered, hybrid organic-inorganic perovskites in order to elucidate the relative contributions of dielectric…