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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 (författare)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Nordita SU
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- Volckaert, Klara (författare)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Lanata, Nicola (författare)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Mahatha, Sanjoy K. (författare)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Sanders, Charlotte E. (författare)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Bianchi, Marco (författare)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Lizzit, Daniel (författare)
- Elettra Sincrotrone Trieste SS, 14 Km 163-5, I-34149 Trieste, Italy.
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- Bignardi, Luca (författare)
- 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 (författare)
- Elettra Sincrotrone Trieste SS, 14 Km 163-5, I-34149 Trieste, Italy.
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- Miwa, Jill A. (författare)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Balatsky, Alexander V. (författare)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Nordiska institutet för teoretisk fysik (Nordita)
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- Hofmann, Philip (författare)
- Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark.
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- Ulstrup, Soren (författare)
- 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
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 100:23
- Relaterad länk:
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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
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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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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