Smirnov, Dmitry S 
; Holler, Johannes ; Kempf, Michael ; Zipfel, Jonas ; Nagler, Philipp ; Ballottin, Mariana V ; Mitioglu, Anatolie A ; Chernikov, Alexey ; Christianen, Peter C M ; Schüller, Christian ; Korn, Tobias
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | 2D Materials |
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| Verlag: | IOP Publishing Ltd |
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| Ort der Veröffentlichung: | BRISTOL |
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| Band: | 9 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 4 |
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| Seitenbereich: | 045016 |
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| Datum: | 2022 |
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| Institutionen: | Physik > Institut für Experimentelle und Angewandte Physik |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1088/2053-1583/ac8602 | DOI |
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| Stichwörter / Keywords: | MONOLAYER; COMPLEXES; SEMICONDUCTORS; CONDUCTIVITY; BIEXCITON; SPIN; excitons; transition metal dichalcogenide; heterobilayer; magnetophonon resonance; photoluminescence; intervalley scattering |
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik |
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| Status: | Veröffentlicht |
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| Begutachtet: | Ja, diese Version wurde begutachtet |
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| An der Universität Regensburg entstanden: | Ja |
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| Dokumenten-ID: | 57573 |
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Zusammenfassung
Heterobilayers consisting of MoSe2 and WSe2 monolayers can host optically bright interlayer excitons with intriguing properties such as ultralong lifetimes and pronounced circular polarization of their photoluminescence due to valley polarization, which can be induced by circularly polarized excitation or applied magnetic fields. Here, we report on the observation of an intrinsic ...
Zusammenfassung
Heterobilayers consisting of MoSe2 and WSe2 monolayers can host optically bright interlayer excitons with intriguing properties such as ultralong lifetimes and pronounced circular polarization of their photoluminescence due to valley polarization, which can be induced by circularly polarized excitation or applied magnetic fields. Here, we report on the observation of an intrinsic valley-magnetophonon resonance for localized interlayer excitons promoted by invervalley hole scattering. It leads to a resonant increase of the photoluminescence polarization degree at the same field of 24.2 Tesla for H-type and R-type stacking configurations despite their vastly different excitonic energy splittings. As a microscopic mechanism of the hole intervalley scattering we identify the scattering with chiral TA phonons of MoSe2 between excitonic states mixed by the long-range electron hole exchange interaction.
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