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Structural Properti...
Structural Properties of TaAs Weyl Semimetal Thin Films Grown by Molecular Beam Epitaxy on GaAs(001) Substrates
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- Sadowski, Janusz (author)
- Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),Polish Acad Sci, Poland;Univ Warsaw, Poland
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- Domagala, Jaroslaw Z. (author)
- Polish Acad Sci, Poland
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- Zajkowska, Wiktoria (author)
- Polish Acad Sci, Poland
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- Kret, Slawomir (author)
- Polish Acad Sci, Poland
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- Seredynski, Bartlomiej (author)
- Univ Warsaw, Poland
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- Gryglas-Borysiewicz, Marta (author)
- Univ Warsaw, Poland
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- Ogorzalek, Zuzanna (author)
- Univ Warsaw, Poland
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- Bozek, Rafal (author)
- Univ Warsaw, Poland
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- Pacuski, Wojciech (author)
- Univ Warsaw, Poland
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(creator_code:org_t)
- 2022-09-22
- 2022
- English.
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In: Crystal Growth & Design. - : American Chemical Society (ACS). - 1528-7483 .- 1528-7505. ; 22:10, s. 6039-6045
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Thin crystalline layers of TaAs Weyl semimetal are grown by molecular beam epitaxy on GaAs(001) substrates. The (001) planes of the tetragonal TaAs lattice are parallel to the GaAs(001) substrate, but the corresponding in-plane crystallographic directions of the substrate and the layer are rotated by 45 degrees. In spite of a substantial lattice mismatch (about 19%) between the GaAs(001) substrate and TaAs epilayer, no misfit dislocations are observed at the GaAs(001)/TaAs(001) interface. Only stacking fault defects in TaAs are detected by transmission electron microscopy. Thorough X-ray diffraction measurements and analysis of the in situ reflection high-energy electron diffraction images indicate that TaAs layers are fully relaxed already at the initial deposition stage. Atomic force microscopy imaging reveals the columnar structure of the layers, with lateral (parallel to the layer's surface) columns about 20 nm wide and 200 nm long. Both X-ray diffraction and transmission electron microscopy measurements indicate that the columns share the same orientation and crystalline structure.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Condensed Matter Physics
- Kondenserade materians fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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