Biexcitons in monolayer transition metal dichalcogenides tuned by magnetic fields.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 30213976.
- Also identified by DOI 10.1038/s41467-018-05643-1 and PMC identifier 6137096.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
We present time-integrated four-wave mixing measurements on monolayer MoSe<sub>2</sub> in magnetic fields up to 25 T. The experimental data together with time-dependent density function theory calculations provide interesting insights into the biexciton formation and dynamics. In the presence of magnetic fields the coherence at negative and positive time delays is dominated by intervalley biexcitons. We demonstrate that magnetic fields can serve as a control to enhance the biexciton formation and help search for more exotic states of matter, including the creation of multiple exciton complexes and excitonic condensates.