期刊
SCIENCE
卷 366, 期 6467, 页码 870-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaw4194
关键词
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资金
- DoD Vannevar Bush Faculty Fellowship [N00014-18-1-2877, N00014-16-1-2825]
- AFOSR MURI [FA9550-17-1-0002]
- NSF [DBI-0959721]
- ARL [W911NF1520067]
- Gordon and Betty Moore Foundation [GBMF4543]
- National Science Foundation under NSF [1541959]
- Fannie and John Hertz Foundation
- Paul & Daisy Soros Fellowships for New Americans
- Elemental Strategy Initiative
- CREST [JPMJCR15F3]
- JST
A van der Waals heterostructure built from atomically thin semiconducting transition metal dichalcogenides (TMDs) enables the formation of excitons from electrons and holes in distinct layers, producing interlayer excitons with large binding energy and a long lifetime. By employing heterostructures of monolayer TMDs, we realize optical and electrical generation of long-lived neutral and charged interlayer excitons. We demonstrate that neutral interlayer excitons can propagate across the entire sample and that their propagation can be controlled by excitation power and gate electrodes. We also use devices with ohmic contacts to facilitate the drift motion of charged interlayer excitons. The electrical generation and control of excitons provide a route for achieving quantum manipulation of bosonic composite particles with complete electrical tunability.
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