Results overview: Found 8 records in 0.01 seconds.
Articles, 8 records found
Articles 8 records found  
1.
34 p, 4.0 MB Gate electrostatics and quantum capacitance in ballistic graphene devices / Caridad, José M. (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Shylau, Artsem A. (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Gammelgaard, Lene (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Jauho, Antti-Pekka (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Bøggild, Peter (Danmarks Tekniske Universitet. Center for Nanostructured Graphene)
We experimentally investigate the charge induction mechanism across gated, narrow, ballistic graphene devices with different degrees of edge disorder. By using magnetoconductance measurements as the probing technique, we demonstrate that devices with large edge disorder exhibit a nearly homogeneous capacitance profile across the device channel, close to the case of an infinitely large graphene sheet. [...]
2019 - 10.1103/PhysRevB.99.195408
Physical review B, Vol. 99, issue 19 (May 2019) , art. 195408  
2.
15 p, 790.9 KB Probing the nanoscale origin of strain and doping in graphene-hBN heterostructures / Vincent, Tom (National Physical Laboratory (United Kingdom)) ; Panchal, Vishal (Bruker Nano Surfaces) ; Booth, Timothy J (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Jauho, Antti-Pekka (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Antonov, Vladimir (University of London. Royal Holloway) ; Kazakova, Olga (National Physical Laboratory (United Kingdom))
We use confocal Raman microscopy and a recently proposed vector analysis scheme to investigate the nanoscale origin of strain and carrier concentration in exfoliated graphene-hexagonal boron nitride (hBN) heterostructures on silicon dioxide (SiO). [...]
2019 - 10.1088/2053-1583/aaf1dc
2D Materials, Vol. 6, issue 1 (Jan. 2019) , art. 15022  
3.
6 p, 1.4 MB Ballistic tracks in graphene nanoribbons / Aprojanz, Johannes (Technische Universität Chemnitz. Institut für Physik) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Bampoulis, Pantelis (Leibniz Universität Hannover. Institut für Festkörperphysik) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Jauho, Antti-Pekka (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Zandvliet, Harold J.W. (University of Twente. Physics of Interfaces and Nanomaterials) ; Zakharov, Alexei A. (Lund University. MAX IV Laboratory) ; Tegenkamp, C. (Institut für Festkörperphysik. Leibniz Universität Hannover)
High quality graphene nanoribbons epitaxially grown on the sidewalls of silicon carbide (SiC) mesa structures stand as key building blocks for graphene-based nanoelectronics. Such ribbons display 1D single-channel ballistic transport at room temperature with exceptionally long mean free paths. [...]
2018 - 10.1038/s41467-018-06940-5
Nature communications, Vol. 9 (October 2018) , art. 4426  
4.
6 p, 1.3 MB Conductance quantization suppression in the quantum Hall regime / Caridad, José M. (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Lotz, Mikkel R. (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Shylau, Artsem A. (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Thomsen, Joachim D. (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Gammelgaard, Lene (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Booth, Timothy J. (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Jauho, Antti-Pekka (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Bøggild, Peter (Danmarks Tekniske Universitet. Center for Nanostructured Graphene)
Conductance quantization is the quintessential feature of electronic transport in non-interacting mesoscopic systems. This phenomenon is observed in quasi one-dimensional conductors at zero magnetic field B, and the formation of edge states at finite magnetic fields results in wider conductance plateaus within the quantum Hall regime. [...]
2018 - 10.1038/s41467-018-03064-8
Nature communications, Vol. 9 (February 2018) , art. 659  
5.
8 p, 761.1 KB Scale-invariant large nonlocality in polycrystalline graphene / Ribeiro, Mário (Nanogune) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Hueso, Luis E. (Nanogune) ; Casanova, Fèlix (Nanogune)
The observation of large nonlocal resistances near the Dirac point in graphene has been related to a variety of intrinsic Hall effects, where the spin or valley degrees of freedom are controlled by symmetry breaking mechanisms. [...]
2017 - 10.1038/s41467-017-02346-x
Nature communications, Vol. 8, issue 1 (Jan. 2017) , art. 2198  
6.
15 p, 1.0 MB 1D ferromagnetic edge contacts to 2D graphene/h-BN heterostructures / Karpiak, Bogdan (Chalmers University of Technology (Göteborg, Suècia)) ; Dankert, André (Chalmers University of Technology (Göteborg, Suècia)) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Dash, Saroj P. (Chalmers University of Technology (Göteborg, Suècia))
We report the fabrication of one-dimensional (1D) ferromagnetic edge contacts to two-dimensional (2D) graphene/h-BN heterostructures. While aiming to study spin injection/detection with 1D edge contacts, a spurious magnetoresistance signal was observed, which is found to originate from the local Hall effect in graphene due to fringe fields from ferromagnetic edge contacts and in the presence of charge current spreading in the nonlocal measurement configuration. [...]
2018 - 10.1088/2053-1583/aa8d2b
2D Materials, Vol. 5, Núm. 1 (January 2018) , article 14001  
7.
14 p, 2.2 MB Electron trajectories and magnetotransport in nanopatterned graphene under commensurability conditions / Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Thomsen, Morten Rishøj (Aalborg Universitet. Department of Physics and Nanotechnology) ; Jauho, Antti-Pekka (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Pedersen, Thomas Garm (Aalborg Universitet. Department of Physics and Nanotechnology)
Commensurability oscillations in the magnetotransport of periodically patterned systems, emerging from the interplay of cyclotron orbit and pattern periodicity, are a benchmark of mesoscopic physics in electron gas systems. [...]
2017 - 10.1103/PhysRevB.96.075425
Physical review B, Vol. 96, issue 7 (Aug. 2017) , p. 75425  
8.
10 p, 3.6 MB Nanostructured graphene for spintronics / Gregersen, Søren Schou (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Jauho, Antti-Pekka (Danmarks Tekniske Universitet. Center for Nanostructured Graphene)
Zigzag edges of the honeycomb structure of graphene exhibit magnetic polarization, making them attractive as building blocks for spintronic devices. Here, we show that devices with zigzag-edged triangular antidots perform essential spintronic functionalities, such as spatial spin splitting or spin filtering of unpolarized incoming currents. [...]
2017 - 10.1103/PhysRevB.95.121406
Physical review B, Vol. 95, issue 12 (March 2017) , art. 121406  

See also: similar author names
2 Power, S.A.
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