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Layer and orbital i...
Layer and orbital interference effects in photoemission from transition metal dichalcogenides
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- Rostami, Habib (author)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Nordita SU
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- Volckaert, Klara (author)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Lanata, Nicola (author)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Mahatha, Sanjoy K. (author)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Sanders, Charlotte E. (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Bianchi, Marco (author)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Lizzit, Daniel (author)
- Elettra Sincrotrone Trieste SS, 14 Km 163-5, I-34149 Trieste, Italy.
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- Bignardi, Luca (author)
- Elettra Sincrotrone Trieste SS, 14 Km 163-5, I-34149 Trieste, Italy.;Univ Trieste, Dept Phys, Via Valerio 2, I-34127 Trieste, Italy.
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- Lizzit, Silvano (author)
- Elettra Sincrotrone Trieste SS, 14 Km 163-5, I-34149 Trieste, Italy.
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- Miwa, Jill A. (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Balatsky, Alexander V. (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Nordiska institutet för teoretisk fysik (Nordita)
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- Hofmann, Philip (author)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Ulstrup, Soren (author)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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(creator_code:org_t)
- American Physical Society, 2019
- 2019
- English.
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In: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 100:23
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- In this work, we provide an effective model to evaluate the one-electron dipole matrix elements governing optical excitations and the photoemission process of single-layer (SL) and bilayer (BL) transition metal dichalcogenides. By utilizing a k . p Hamiltonian, we calculate the photoemission intensity as observed in angle-resolved photoemission from the valence bands around the (K) over bar valley of MoS2. In SL MoS2, we find a significant masking of intensity outside the first Brillouin zone, which originates from an in-plane interference effect between photoelectrons emitted from the Mo d orbitals. In BL MoS2, an additional interlayer interference effect leads to a distinctive modulation of intensity with photon energy. Finally, we use the semiconductor Bloch equations to model the optical excitation in a time- and angle-resolved pump-probe photoemission experiment. We find that the momentum dependence of an optically excited population in the conduction band leads to an observable dichroism in both SL and BL MoS2.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Rostami, Habib
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Volckaert, Klara
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Lanata, Nicola
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Mahatha, Sanjoy ...
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Sanders, Charlot ...
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Bianchi, Marco
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Lizzit, Daniel
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Bignardi, Luca
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Lizzit, Silvano
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Miwa, Jill A.
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Balatsky, Alexan ...
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Hofmann, Philip
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Ulstrup, Soren
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Physical Review ...
- By the university
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Royal Institute of Technology
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Stockholm University