The hottest structure of 2019

At APS March last year, Pablo Jarillo-Herrero reported superconductivity in graphene bilayers. Soon after this, hundreds of publications were published on arXiv, with theorists trying to understand the phenomenon, and experimentalists trying to reproduce the effect and observe different properties on new materials. A few weeks ago, at APS March 2019, there were more than […]

Why are excitons important?

In the applied physics of semiconductors, two types of carriers with similar properties but with opposite charge, take part in the optical and electrical phenomena: electrons and holes. In halide perovskite, as well as in organic semiconductors, the main carrier contributions arise from excitons. One may think about these as bound state of coupled electrons […]