368 citations · 2.1k across the 33 of their papers we have counts for
33 papers
Average density of Bloch electrons in a homogeneous magnetic field: A second-order response
Benjamin M. Fregoso
We compute the average density of a three-dimensional multiband crystal of arbitrary symmetry, metal or insulator, to first and second order in a weak homogeneous magnetic field. T…
Nonlinear photomagnetization in insulators
Bernardo S. Mendoza, Norberto Arzate-Plata, Nicolas Tancogne-Dejean +1
Nonlinear photomagnetization is a process by which an oscillating electric field induces a static magnetization. We show that all 32 crystallographic point groups admit such spin p…
Topological Mixed Valence Model in Magic-Angle Twisted Bilayer Graphene
Yantao Li, Benjamin M. Fregoso, Maxim Dzero
We develop a model to describe the mixed valence regime in magic-angle twisted bilayer graphene (MATBG) using the recently developed heavy-fermion framework. By employing the large…
Bulk photospin effect: Calculation of electric spin susceptibility to second order in an electric field
Benjamin M. Fregoso
We compute the electric spin susceptibility of Bloch electrons with spin-orbit coupling to second order. We find that it is possible to generate a nonequilibrium spin polarization…
Ultrafast relaxation of acoustic and optical phonons in a topological nodal-line semimetal ZrSiS
Yangyang Liu, Gyanendra Dhakal, Anup Pradhan Sakhya +7
Despite being the most studied nodal line semimetal, a clear understanding of the transient state relaxation dynamics and the underlying mechanism in ZrSiS is lacking. Using time a…
Energy relaxation dynamics in a nodal-line semimetal
Benjamin M. Fregoso, Madhab Neupane, Anup Pradhan Sakhya
We study the temperature relaxation dynamics of nodal-line semimetals after a sudden excitation in the presence of acoustic and optical phonon modes. We find that the nodal line co…