Gate Tunable Dark Trions in Monolayer WSe 2
| العنوان: | Gate Tunable Dark Trions in Monolayer WSe 2 |
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| المؤلفون: | Liu, Erfu, van Baren, Jeremiah, Lu, Zhengguang, Altaiary, Mashael M., Taniguchi, Takashi, Watanabe, Kenji, Smirnov, Dmitry, Lui, Chun Hung |
| سنة النشر: | 2023 |
| المجموعة: | SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
| مصطلحات موضوعية: | 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY |
| الوصف: | Monolayer WSe 2 is an intriguing material to explore dark exciton physics. We have measured the photoluminescence from dark excitons and trions in ultraclean monolayer WSe 2 devices encapsulated by boron nitride. The dark trions can be tuned continuously between negative and positive trions with electrostatic gating. We reveal their spin-triplet configuration and distinct valley optical emission by their characteristic Zeeman splitting under a magnetic field. Here, the dark trion binding energies are 14–16 meV, slightly lower than the bright trion binding energies (21–35 meV). The dark trion lifetime (~1.3 ns) is two orders of magnitude longer than the bright trion lifetime (~10 ps) and can be tuned between 0.4 and 1.3 ns by gating. Such robust, optically detectable, and gate tunable dark trions may help us realize trion transport in two-dimensional materials. |
| نوع الوثيقة: | other/unknown material |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| Relation: | http://www.osti.gov/servlets/purl/1609905; https://www.osti.gov/biblio/1609905; https://doi.org/10.1103/physrevlett.123.027401 |
| DOI: | 10.1103/physrevlett.123.027401 |
| الاتاحة: | http://www.osti.gov/servlets/purl/1609905 https://www.osti.gov/biblio/1609905 https://doi.org/10.1103/physrevlett.123.027401 |
| رقم الانضمام: | edsbas.DE27BE56 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1103/physrevlett.123.027401 |
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