2 papers
cond-mat.mes-hall2026
Effects of high-order Van Hove singularities on exciton and trion energy dispersions
Lewis J. Burke, Mark T. Greenaway, Joseph J. Betouras
We investigate the effects of Van Hove singularities in the electronic band structure of two-dimensional semiconductors on the energy dispersion of excitons and positive trions. In…
cond-mat.mes-hall2025
Brightening dark excitons and trions in systems with a Mexican-hat energy dispersion: example of InSe
Lewis J. Burke, Mark T. Greenaway, Joseph J. Betouras
We investigate the properties of momentum-dark excitons and trions formed in two-dimensional (2D) materials that exhibit an inverted Mexican-hat-shaped dispersion relation, taking…