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Multi-scale investi...
Multi-scale investigation of interface properties, stacking order and decoupling of few layer graphene on C-face 4H-SiC
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- Bouhafs, Chamseddine (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Zakharov, A. A. (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund University, Sweden
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- Ivanov, Ivan Gueorguiev (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Giannazzo, F. (author)
- CNR IMM, Italy,CNR Institute for Microelectronics and Microsystems (IMM-CNR)
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- Eriksson, Jens (author)
- Linköping University,Linköpings universitet,Tillämpad sensorvetenskap,Tekniska fakulteten
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- Stanishev, Vallery (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Kuhne, Philipp (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Iakimov, Tihomir (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Hofmann, Tino (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten,University of Nebraska Lincoln, NE 68588 USA
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- Schubert, Mathias (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten,University of Nebraska Lincoln, NE 68588 USA
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- Roccaforte, F. (author)
- CNR IMM, Italy,CNR Institute for Microelectronics and Microsystems (IMM-CNR)
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- Yakimova, Rositsa (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Darakchieva, Vanya (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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(creator_code:org_t)
- PERGAMON-ELSEVIER SCIENCE LTD, 2017
- 2017
- English.
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In: Carbon. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0008-6223 .- 1873-3891. ; 116, s. 722-732
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Subject headings
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- In this work, we report a multi-scale investigation using several nano-, micro and macro-scale techniques of few layer graphene (FLG) sample consisting of large monolayer (ML) and bilayer (BL) areas grown on C-face 4H-SiC (000-1) by high-temperature sublimation. Single 1 x 1 diffraction patterns are observed by micro-low-energy electron diffraction for ML, BL and trilayer graphene with no indication of out-of-plane rotational disorder. A SiOx layer is identified between graphene and SiC by X-ray photoelectron emission spectroscopy and reflectance measurements. The chemical composition of the interface layer changes towards SiO2 and its thickness increases with aging in normal ambient conditions. The formation mechanism of the interface layer is discussed. It is shown by torsion resonance conductive atomic force microscopy that the interface layer causes the formation of non-ideal Schottky contact between ML graphene and SiC. This is attributed to the presence of a large density of interface states. Mid-infrared optical Hall effect measurements revealed Landau-level transitions in FLG that have a square-root dependence on magnetic field, which evidences a stack of decoupled graphene sheets. Contrary to previous works on decoupled C-face graphene, our BL and FLG are composed of ordered decoupled graphene layers without out-of-plane rotation. (C) 2017 Elsevier Ltd. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
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- ref (subject category)
- art (subject category)
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Carbon
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- By the author/editor
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Bouhafs, Chamsed ...
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Zakharov, A. A.
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Ivanov, Ivan Gue ...
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Giannazzo, F.
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Eriksson, Jens
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Stanishev, Valle ...
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Kuhne, Philipp
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Iakimov, Tihomir
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Hofmann, Tino
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Schubert, Mathia ...
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Roccaforte, F.
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Yakimova, Rosits ...
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Darakchieva, Van ...
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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 ...
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and Condensed Matter ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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Carbon
- By the university
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Linköping University
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Lund University