3 papers
cond-mat.mtrl-sci2026
Observation of magnetically switchable quantum geometric photocurrents
Qi Tian, Zhuoliang Ni, Matthew Cothrine +6
In non-centrosymmetric materials, light can be rectified into two types of DC photocurrents, known as injection and shift currents, through the bulk photovoltaic effect. Recent the…
cond-mat.mes-hall2026
Transport signatures of valley polarization in graphene multilayers: In-plane linear magnetoconductivity vs anomalous Hall effect
Fernando Peñaranda, Fernando de Juan
In two-dimensional materials where interacting Fermi pockets occur in valleys related by time-reversal symmetry, a spontaneous valley imbalance results in a novel state known as an…
cond-mat.mes-hall2025
Magnetic injection photocurrents in valley polarized states of twisted bilayer graphene
Fernando Peñaranda, Héctor Ochoa, Fernando de Juan
Magic-angle twisted bilayer graphene displays a complex phase diagram as a function of flat band filling, featuring compressibility cascade transitions and a variety of competing g…