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Title
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Strong valley Zeeman effect of dark excitons in monolayer transition metal dichalcogenides in a tilted magnetic field
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Author
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Abstract
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| The dependence of the excitonic photoluminescence (PL) spectrum of monolayer transition metal dichalcogenides (TMDs) on the tilt angle of an applied magnetic field is studied. Starting from a four-band Hamiltonian we construct a theory which quantitatively reproduces the available experimental PL spectra for perpendicular and in-plane magnetic fields. In the presence of a tilted magnetic field, we demonstrate that the dark exciton PL peaks brighten due to the in-plane component of the magnetic field and split for light with different circular polarizations as a consequence of the perpendicular component of the magnetic field. This splitting is more than twice as large as the splitting of the bright exciton peaks in tungsten-based TMDs. We propose an experimental setup that will allow for accessing the predicted splitting of the dark exciton peaks in the PL spectrum. |
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Language
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English
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Source (journal)
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Physical review B / American Physical Society. - New York, N.Y, 2016, currens
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Publication
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New York, N.Y
:
American Physical Society
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2018
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ISSN
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2469-9969
[online]
2469-9950
[print]
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Volume/pages
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97
:8
(2018)
, 5 p.
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Article Reference
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081109
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ISI
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000425603600001
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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