Recent content by EdB

Thanks for the answer, Henryk. I do agree with you in the case of trivial surface states in a band semiconductor, while I find more difficult to imagine how adsorbed non-magnetic molecules can microscopically interact to "destroy" topologically-protected electronic states. Should I interpret...

I have a question (more like a curiosity) related to three-dimensional topological insulators, which support Dirac-like states at their surfaces. From the theory, it is well known that these states are immune to scattering from non-magnetic impurities, i.e. impurities that do not break...

Hello everybody, I have a question related to dispersionless excitations in solids (especially charge excitations). Usually when you have a charge excitation involving an impurity in a solid or another excitation that is very local in real space, they show up with a flat dispersion in...

Hello everybody, this question is mainly addressed to people interested or involved in superconductivity. In the paper "Is there a glue in cuprate superconductors?" (Link - 2007) Anderson argues that the most important element to understand the pairing mechanism in cuprates is the proximity...