Results overview: Found 58 records in 0.04 seconds.
Articles, 57 records found
Research literature, 1 records found
Articles 57 records found  1 - 10nextend  jump to record:
1.
47 p, 1.9 MB Charge transport in polycrystalline graphene : challenges and opportunities / Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Duong, Dinh Loc (Sungkyunkwan University. Institute for Basic Science) ; Nguyen, Van Luan (Sungkyunkwan University. Department of Energy Science) ; Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Kotakoski, Jani (University of Helsinki. Department of Physics) ; Barrios Vargas, José Eduardo (Institut Català de Nanociència i Nanotecnologia) ; Lee, Young Hee (Sungkyunkwan University. Institute for Basic Science) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Graphene has attracted significant interest both for exploring fundamental science and for a wide range of technological applications. Chemical vapor deposition (CVD) is currently the only working approach to grow graphene at wafer scale, which is required for industrial applications. [...]
2014 - 10.1002/adma.201401389
Advanced materials, Vol. 26, issue 30 (August 2014) , p. 5079-5094  
2.
5 p, 1.1 MB Tunneling magnetoresistance phenomenon utilizing graphene magnet electrode / Hashimoto, T. (Aoyama Gakuin University. Faculty of Science and Engineering) ; Kamikawa, S. (Aoyama Gakuin University. Faculty of Science and Engineering) ; Soriano, David (Institut Català de Nanociència i Nanotecnologia) ; Pedersen, J.G. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Haruyama, J. (Aoyama Gakuin University. Faculty of Science and Engineering)
Using magnetic rare-metals for spintronic devices is facing serious problems for the environmental contamination and the limited material-resource. In contrast, by fabricating ferromagnetic graphene nanopore arrays (FGNPAs) consisting of honeycomb-like array of hexagonal nanopores with hydrogen-terminated zigzag-type atomic structure edges, we reported observation of polarized electron spins spontaneously driven from the pore edge states, resulting in rare-metal-free flat-energy-band ferromagnetism. [...]
2014 - 10.1063/1.4901279
Applied Physics Letters, Vol. 105, issue 18 (Nov. 2014) , art. 183111
2 documents
3.
Exploring phononic properties of two-dimensional materials using machine learning interatomic potentials / Mortazavi, Bohayra (Bauhaus-Universität Weimar. Institute of Structural Mechanics) ; Novikov, Ivan S. (University of Stuttgart) ; Podryabinkin, Evgeny V. (Skolkovo Institute of Science and Technology) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Rabczuk, Timon (Tongji University) ; Shapeev, Alexander V. (Skolkovo Institute of Science and Technology) ; Zhuang, Xiaoying (Tongji University)
Phononic properties are commonly studied by calculating force constants using the density functional theory (DFT) simulations. Although DFT simulations offer accurate estimations of phonon dispersion relations or thermal properties, but for low-symmetry and nanoporous structures the computational cost quickly becomes very demanding. [...]
2020 - 10.1016/j.apmt.2020.100685
Applied materials today, Vol. 20 (September 2020) , art. 100685  
4.
Universal Spin Diffusion Length in Polycrystalline Graphene / Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Dubois, Simon M.M. (Université Catholique de Louvain) ; Charlier, Jean Christophe (Université Catholique de Louvain) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Graphene grown by chemical vapor deposition (CVD) is the most promising material for industrial-scale applications based on graphene monolayers. It also holds promise for spintronics; despite being polycrystalline, spin transport in CVD graphene has been measured over lengths up to 30 μm, which is on par with the best measurements made in single-crystal graphene. [...]
2019 - 10.1021/acs.nanolett.9b03112
Nano letters, Vol. 19, Issue 10 (October 2019) , p. 7418-7426  
5.
9 p, 1.8 MB Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene / Karpiak, Bogdan (Chalmers University of Technology) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Zollner, Klaus (University of Regensburg) ; Vila Tusell, Marc (Universitat Autònoma de Barcelona. Departament de Física) ; Khokhriakov, Dmitrii (Chalmers University of Technology) ; Hoque, Anamul Md (Chalmers University of Technology) ; Dankert, André (Chalmers University of Technology) ; Svedlindh, Peter (Uppsala University) ; Fabian, Jaroslav (University of Regensburg) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Dash, Saroj P. (Chalmers University of Technology)
Engineering 2D material heterostructures by combining the best of different materials in one ultimate unit can offer a plethora of opportunities in condensed matter physics. Here, in the van der Waals heterostructures of the ferromagnetic insulator CrGeTe and graphene, our observations indicate an out-of-plane proximity-induced ferromagnetic exchange interaction in graphene. [...]
2019 - 10.1088/2053-1583/ab5915
2D Materials, Vol. 7, Núm. 1 (December 2019) , art. 15026  
6.
7 p, 2.2 MB Nonlocal Spin Dynamics in the Crossover from Diffusive to Ballistic Transport / Vila Tusell, Marc (Institut Català de Nanociència i Nanotecnologia) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Groth, Christoph W. (Université Grenoble Alpes) ; Waintal, Xavier (Université Grenoble Alpes) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Improved fabrication techniques have enabled the possibility of ballistic transport and unprecedented spin manipulation in ultraclean graphene devices. Spin transport in graphene is typically probed in a nonlocal spin valve and is analyzed using spin diffusion theory, but this theory is not necessarily applicable when charge transport becomes ballistic or when the spin diffusion length is exceptionally long. [...]
2020 - 10.1103/PhysRevLett.124.196602
Physical review letters, Vol. 124, Issue 19 (May 2020) , art. 196602  
7.
13 p, 895.2 KB Charge and spin transport anisotropy in nanopatterned graphene / Gregersen, Søren Schou (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Jauho, Antti-Pekka (Danmarks Tekniske Universitet. Center for Nanostructured Graphene) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia)
Anisotropic electronic transport is a possible route towards nanoscale circuitry design, particularly in two-dimensional materials. Proposals to introduce such a feature in patterned graphene have to date relied on large-scale structural inhomogeneities. [...]
2018 - 10.1088/2515-7639/aadca3
Journal of physics: Materials, Vol. 1, Núm. 1 (September 2018) , art. 015005  
8.
15 p, 1.7 MB Deciphering the origin of nonlocal resistance in multiterminal graphene on hexagonal-boron-nitride with ab initio quantum transport : fermi surface edge currents rather than Fermi sea topological valley currents / Marmolejo Tejada, J.M. (University of Delaware. Department of Physics and Astronomy) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Petrović, M. D. (University of Delaware. Department of Mathematical Sciences) ; Chang, P-H (University of Nebraska Lincoln. Department of Physics and Astronomy) ; Sheng, X-L (University of Delaware. Department of Mathematical Sciences) ; Cresti, Alessandro (Université Grenoble Alpes) ; Plecháč, P. (University of Delaware. Department of Mathematical Sciences) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Nikolić, B.K. (University of Delaware. Department of Physics and Astronomy)
The recent observation (Gorbachev et al 2014 Science 346 448) of nonlocal resistance R NL near the Dirac point (DP) of multiterminal graphene on aligned hexagonal-boron nitride (G/hBN) has been interpreted as the consequence of topological valley Hall currents carried by the Fermi sea states just beneath the bulk gap E g induced by inversion symmetry breaking. [...]
2018 - 10.1088/2515-7639/aad585
Journal of physics: Materials, Vol. 1, Núm. 1 (September 2018) , art. 015006  
9.
6 p, 1.2 MB Unequivocal signatures of the crossover to Anderson localization in realistic models of disordered quasi-one-dimensional materials / López Bezanilla, Alejandro (Los Alamos National Laboratory) ; Froufe Pérez, Luis S. (University of Fribourg. Department of Physics) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Sáenz, Juan José (IKERBASQUE)
The only unequivocal known criterion for single-parameter scaling Anderson localization relies on the knowledge of the full conductance statistics. To date, theoretical studies have been restricted to model systems with symmetric scatterers, hence lacking universality. [...]
2018 - 10.1103/PhysRevB.98.235423
Physical review B, Vol. 98, Issue 23 (December 2018) , art. 235423  
10.
43 p, 3.3 MB Sensing ion channel in neuron networks with graphene field effect transistors / Veliev, Farida (Université Grenoble Alpes) ; Cresti, Alessandro (Université Grenoble Alpes) ; Kalita, Dipankar (Université Grenoble Alpes) ; Bourrier, Antoine (Université Grenoble Alpes) ; Belloir, Tiphaine (Université Grenoble Alpes) ; Briançon-Marjollet, Anne (Université Grenoble Alpes) ; Albrieux, Mireille (Université Grenoble Alpes) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Bouchiat, Vincent (Université Grenoble Alpes) ; Delacour, Cécile (Université Grenoble Alpes)
Graphene, the atomically-thin honeycomb carbon lattice, is a highly conducting 2D material whose exposed electronic structure offers an ideal platform for chemical and biological sensing. Its biocompatible, flexible and chemically inert nature associated with the lack of dangling bonds, offers novel perspectives for direct interfacing with biological molecules. [...]
2018 - 10.1088/2053-1583/aad78f
2D Materials, Vol. 5, Núm. 4 (October 2018) , art. 45020  

Articles : 57 records found   1 - 10nextend  jump to record:
Research literature 1 records found  
1.
228 p, 4.6 MB Charge and Spin Transport in Disordered Graphene-Based Materials / Dinh, Van Tuan ; Roche, Stephan, dir. ; Pascual, Jordi ; Universitat Autònoma de Barcelona. Departament de Física
Esta tesis está enfocada en la modelización y simulación del transporte de carga y spin en materiales bidimensionales basados en Grafeno, así como en el impacto de la policristalinidad en el rendimiento de transistores de efecto campo diseñados con este tipo de materiales. [...]
This thesis is focused on modeling and simulation of charge and spin transport in two dimensional graphene-based materials as well as the impact of graphene polycrystallinity on the performance of graphene field-effect transistors. [...]

[Barcelona] : Universitat Autònoma de Barcelona, 2014  

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12 Roche, S.
1 Roche, Stephan,
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