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Visualizing band st...
Visualizing band structure hybridization and superlattice effects in twisted MoS2/WS2 heterobilayers
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- Jones, Alfred J. H. (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Muzzio, Ryan (författare)
- Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
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- Pakdel, Sahar (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.;Tech Univ Denmark, Dept Phys, CAMD, DK-2800 Lyngby, Denmark.
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- Biswas, Deepnarayan (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Curcio, Davide (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Lanatà, Nicola (författare)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Aarhus University, Denmark,Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.; NORDITA SU
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- Hofmann, Philip (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- McCreary, Kathleen M. (författare)
- Naval Res Lab, Washington, DC 20375 USA.
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- Jonker, Berend T. (författare)
- Naval Res Lab, Washington, DC 20375 USA.,Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.
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- Watanabe, Kenji (författare)
- Natl Inst Mat Sci, Res Ctr Funct Mat, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.
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- Taniguchi, Takashi (författare)
- Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.
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- Singh, Simranjeet (författare)
- Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
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- Koch, Roland J. (författare)
- EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
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- Jozwiak, Chris (författare)
- EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
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- Rotenberg, Eli (författare)
- EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
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- Bostwick, Aaron (författare)
- EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
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- Miwa, Jill A. (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Katoch, Jyoti (författare)
- Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
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- Ulstrup, Soren (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. (creator_code:org_t)
- 2021-12-21
- 2022
- Engelska.
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Ingår i: Current Opinion in Chemical Engineering. - : IOP Publishing Ltd. - 2211-3398. ; 9:1
- Relaterad länk:
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http://arxiv.org/pdf...
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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
- A mismatch of atomic registries between single-layer transition metal dichalcogenides (TMDs) in a two-dimensional (2D) van der Waals heterostructure produces a moire superlattice with a periodic potential, which can be fine-tuned by introducing a twist angle between the materials. This approach is promising both for controlling the interactions between the TMDs and for engineering their electronic band structures, yet direct observation of the changes to the electronic structure introduced with varying twist angle has so far been missing. Here, we probe heterobilayers comprised of single-layer MoS2 and WS2 with twist angles ranging from 2 degrees to 20 degrees and determine the twist angle-dependent evolution of the electronic band structure using micro-focused angle-resolved photoemission spectroscopy. We find strong interlayer hybridization between MoS2 and WS2 electronic states at the (Gamma) over bar -point of the Brillouin zone, leading to a shift of the valence band maximum in the heterostructure. Replicas of the hybridized states are observed at the center of twist angle-dependent moire mini Brillouin zones. We confirm that these replica features arise from the inherent moire potential by comparing our experimental observations with density functional theory calculations of the superlattice dispersion. Our direct visualization of these features underscores the potential of using twisted heterobilayer semiconductors to engineer hybrid electronic states and superlattices that alter the electronic and optical properties of 2D heterostructures for a wide range of twist angles.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- transition metal dichalcogenide heterobilayers
- moire superlattice
- twistronics
- electronic structure
- microARPES
- DFT
Publikations- och innehållstyp
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- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Jones, Alfred J. ...
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Muzzio, Ryan
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Pakdel, Sahar
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Biswas, Deepnara ...
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Curcio, Davide
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Lanatà, Nicola
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visa fler...
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Hofmann, Philip
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McCreary, Kathle ...
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Jonker, Berend T ...
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Watanabe, Kenji
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Taniguchi, Takas ...
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Singh, Simranjee ...
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Koch, Roland J.
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Jozwiak, Chris
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Rotenberg, Eli
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Bostwick, Aaron
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Miwa, Jill A.
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Katoch, Jyoti
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Ulstrup, Soren
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Den kondenserade ...
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
- Artiklar i publikationen
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Current Opinion ...
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2D Materials
- Av lärosätet
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Kungliga Tekniska Högskolan
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Stockholms universitet