12 citations · 14 across the 8 of their papers we have counts for
8 papers
Coupling between ferroelectric distortions and excitonic properties in PbTiO
Pietro Pacchioni, Lorenzo Varrassi, Cesare Franchini
PbTiO is a ferroelectric perovskite semiconductor with favourable electronic and optical properties, making it suitable for a wide range of applications, including photo-cataly…
AMaRaNTA: Automated First-Principles Exchange Parameters In 2D Magnets
Federico Orlando, Andrea Droghetti, Lorenzo Varrassi +7
Two-dimensional (2D) magnets host a wide range of exotic magnetic textures, whose low-energy excitations and finite-temperature properties are typically described by effective spin…
Automated Workflow for Accurate High-Throughput GW Calculations
Lorenzo Varrassi, Florian Ellinger, Espen Flage-Larsen +4
The GW approximation represents the state-of-the-art ab-initio method for computing excited-state properties. Its execution requires control over a larger number of (often interdep…
Ultrastrong coupling between polar distortion and optical properties in ferroelectric MoBrO
Zhaojun Li, Lorenzo Varrassi, Yali Yang +3
Tuning the properties of materials using external stimuli is crucial for developing versatile smart materials. A strong coupling among order parameters within a single-phase materi…
PbCu(PO)O is a charge-transfer semiconductor
Lorenzo Celiberti, Lorenzo Varrassi, Cesare Franchini
By means of density functional theory and constrained random phase approximation we analyze the bandstructure of PbCu(PO)O (named LK-99). Our data show that the lead-ph…
Quasiparticle and excitonic properties of monolayer SrTiO
Lorenzo Varrassi, Peitao Liu, Cesare Franchini
Strontium titanate SrTiO is one of the most studied and paradigmatic transition metal oxides. Recently, a breakthrough has been achieved with the fabrication of freestanding Sr…
Optical and excitonic properties of transition metal oxide perovskites by the Bethe-Salpeter equation
Lorenzo Varrassi, Peitao Liu, Zeynep Ergönenc Yavas +3
We present a systematic investigation of the role and importance of excitonic effects on the optical properties of transitions metal oxide perovskites. A representative set of four…
Pressure-induced excitations in the out-of-plane optical response of the nodal-line semimetal ZrSiS
J. Ebad-Allah, S. Rojewski, M. Vöst +9
The anisotropic optical response of the layered, nodal-line semimetal ZrSiS at ambient and high pressure is investigated by frequency-dependent reflectivity measurements for the po…