Spectrally resolved far-field emission pattern of single photon emitters in Mo S2

Katja Barthelmi; Tomer Amit; Lukas Sigl; Mirco Troue; Thomas Klokkers; Anna Herrmann; Takashi Taniguchi; Kenji Watanabe; Jonathan Finley; Christoph Kastl; Sivan Refaely-Abramson; Alexander Holleitner

doi:10.1103/PhysRevMaterials.9.016201

Spectrally resolved far-field emission pattern of single photon emitters in Mo S2

Katja Barthelmi, Tomer Amit, Lukas Sigl, Mirco Troue, Thomas Klokkers, Anna Herrmann, Takashi Taniguchi, Kenji Watanabe, Jonathan Finley, Christoph Kastl, Sivan Refaely-Abramson, Alexander Holleitner

Department of Molecular Chemistry and Materials Science Perlman

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

We explore the optical dipole orientation of single photon emitters in monolayer MoS2 as produced by a focused helium ion beam. The single photon emitters can be understood as single-sulfur vacancies. The corresponding far-field luminescence spectra reveal several photoluminescence lines below the dominating luminescence of the exciton in MoS2. These sub-bandgap emission lines were predicted by ab initio theory, but they have never been resolved in luminescence experiments because of their small amplitude. We reveal the lines by their dependence as a function of the photon energy and momentum as measured in the back focal plane of the optical circuitry. The agreement between theory and experiment suggests that the defect states interact strongly within the Brillouin zone.

Original language	English
Article number	016201
Journal	Physical Review Materials
Volume	9
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevMaterials.9.016201
State	Published - Jan 2025

All Science Journal Classification (ASJC) codes

General Materials Science
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevMaterials.9.016201

Cite this

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abstract = "We explore the optical dipole orientation of single photon emitters in monolayer MoS2 as produced by a focused helium ion beam. The single photon emitters can be understood as single-sulfur vacancies. The corresponding far-field luminescence spectra reveal several photoluminescence lines below the dominating luminescence of the exciton in MoS2. These sub-bandgap emission lines were predicted by ab initio theory, but they have never been resolved in luminescence experiments because of their small amplitude. We reveal the lines by their dependence as a function of the photon energy and momentum as measured in the back focal plane of the optical circuitry. The agreement between theory and experiment suggests that the defect states interact strongly within the Brillouin zone.",

author = "Katja Barthelmi and Tomer Amit and Lukas Sigl and Mirco Troue and Thomas Klokkers and Anna Herrmann and Takashi Taniguchi and Kenji Watanabe and Jonathan Finley and Christoph Kastl and Sivan Refaely-Abramson and Alexander Holleitner",

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AU - Barthelmi, Katja

AU - Amit, Tomer

AU - Sigl, Lukas

AU - Troue, Mirco

AU - Klokkers, Thomas

AU - Herrmann, Anna

AU - Taniguchi, Takashi

AU - Watanabe, Kenji

AU - Finley, Jonathan

AU - Kastl, Christoph

AU - Refaely-Abramson, Sivan

AU - Holleitner, Alexander

PY - 2025/1

Y1 - 2025/1

N2 - We explore the optical dipole orientation of single photon emitters in monolayer MoS2 as produced by a focused helium ion beam. The single photon emitters can be understood as single-sulfur vacancies. The corresponding far-field luminescence spectra reveal several photoluminescence lines below the dominating luminescence of the exciton in MoS2. These sub-bandgap emission lines were predicted by ab initio theory, but they have never been resolved in luminescence experiments because of their small amplitude. We reveal the lines by their dependence as a function of the photon energy and momentum as measured in the back focal plane of the optical circuitry. The agreement between theory and experiment suggests that the defect states interact strongly within the Brillouin zone.

AB - We explore the optical dipole orientation of single photon emitters in monolayer MoS2 as produced by a focused helium ion beam. The single photon emitters can be understood as single-sulfur vacancies. The corresponding far-field luminescence spectra reveal several photoluminescence lines below the dominating luminescence of the exciton in MoS2. These sub-bandgap emission lines were predicted by ab initio theory, but they have never been resolved in luminescence experiments because of their small amplitude. We reveal the lines by their dependence as a function of the photon energy and momentum as measured in the back focal plane of the optical circuitry. The agreement between theory and experiment suggests that the defect states interact strongly within the Brillouin zone.

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Spectrally resolved far-field emission pattern of single photon emitters in Mo S2

Abstract

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