Resultados globales: 17 registros encontrados en 0.02 segundos.
Artículos, Encontrados 17 registros
Artículos Encontrados 17 registros  1 - 10siguiente  ir al registro:
1.
11 p, 562.6 KB Spin transport in hydrogenated graphene / Soriano, David (Institut Català de Nanociència i Nanotecnologia) ; Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Dubois, Simon M.M. (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences) ; Gmitra, Martin (University of Regensburg) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Kochan, Denis (University of Regensburg) ; Ortmann, Frank (Technische Universität Dresden) ; Charlier, Jean Christophe (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences) ; Fabian, Jaroslav (Universität Regensburg) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
In this review we discuss the multifaceted problem of spin transport in hydrogenated graphene from a theoretical perspective. The current experimental findings suggest that hydrogenation can either increase or decrease spin lifetimes, which calls for clarification. [...]
2015 - 10.1088/2053-1583/2/2/022002
2D Materials, Vol. 2, Núm. 2 (June 2015) , art. 22002  
2.
7 p, 3.5 MB Quantum Hall effect in polycrystalline graphene : The role of grain boundaries / Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Cresti, Alessandro (Université Grenoble Alpes) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We use numerical simulations to predict peculiar magnetotransport fingerprints in polycrystalline graphene, driven by the presence of grain boundaries of varying size and orientation. The formation of Landau levels is shown to be restricted by the polycrystalline morphology, requiring the magnetic length to be smaller than the average grain radius. [...]
2014 - 10.1103/PhysRevB.90.161401
Physical Review B, Vol. 90, Issue 16 (October 2014) , art. 161401  
3.
11 p, 3.3 MB Spin precession in anisotropic media / Raes, Bart (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Bonell, Frédéric (Institut Català de Nanociència i Nanotecnologia) ; Costache, Marius V. (Institut Català de Nanociència i Nanotecnologia) ; Sierra, Juan F. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia)
We generalize the diffusive model for spin injection and detection in nonlocal spin structures to account for spin precession under an applied magnetic field in an anisotropic medium, for which the spin lifetime is not unique and depends on the spin orientation. [...]
2017 - 10.1103/PhysRevB.95.085403
Physical Review B, Vol. 95, Issue 8 (February 2017) , art. 85403  
4.
9 p, 1.0 MB Tailoring emergent spin phenomena in Dirac material heterostructures / Khokhriakov, Dmitrii (Chalmers University of Technology) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Song, Kenan (Institut Català de Nanociència i Nanotecnologia) ; Vila Tusell, Marc (Institut Català de Nanociència i Nanotecnologia) ; Karpiak, Bogdan (Chalmers University of Technology) ; Dankert, André (Chalmers University of Technology) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Dash, Saroj P. (Chalmers University of Technology)
Dirac materials such as graphene and topological insulators (TIs) are known to have unique electronic and spintronic properties. We combine graphene with TIs in van der Waals heterostructures to demonstrate the emergence of a strong proximity-induced spin-orbit coupling in graphene. [...]
2018 - 10.1126/sciadv.aat9349
Science advances, Vol. 4, Núm. 9 (September 2018) , art. aat9349  
5.
14 p, 1.6 MB Localized electronic states at grain boundaries on the surface of graphene and graphite / Luican-Mayer, Adina (University of Ottawa. Department of Physics) ; Barrios-Vargas, José Eduardo (Institut Català de Nanociència i Nanotecnologia) ; Falkenberg, Jesper Toft (Technical University of Denmark. Department of Micro- and Nanotechnology) ; Autès, Gabriel (Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL)) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Soriano, David (Institut Català de Nanociència i Nanotecnologia) ; Li, Guohong (Rutgers University. Department of Physics and Astronomy) ; Brandbyge, Mads (Technical University of Denmark. Department of Micro- and Nanotechnology) ; Yazyev, Oleg V. (Institute of Physics. Ecole Polytechnique Fédérale de Lausanne (EPFL)) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Yandrei, Eva Y. (Rutgers University. Department of Physics and Astronomy)
Recent advances in large-scale synthesis of graphene and other 2D materials have underscored the importance of local defects such as dislocations and grain boundaries (GBs), and especially their tendency to alter the electronic properties of the material. [...]
2016 - 10.1088/2053-1583/3/3/031005
2D Materials, Vol. 3, Núm. 3 (September 2016) , art. 031005  
6.
8 p, 774.9 KB Spin dynamics and relaxation in graphene dictated by electron-hole puddles / Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Technische Universität Dresden) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Soriano, David (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
The understanding of spin dynamics and relaxation mechanisms in clean graphene, and the upper time and length scales on which spin devices can operate, are prerequisites to realizing graphene-based spintronic technologies. [...]
2016 - 10.1038/srep21046
Scientific reports, Vol. 6 (2016) , art. 21046  
7.
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  
8.
19 p, 1.3 MB Spin hall effect and weak antilocalization in graphene/transition metal dichalcogenide heterostructures / Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on a theoretical study of the spin Hall Effect (SHE) and weak antilocalization (WAL) in graphene/transition metal dichalcogenide (TMDC) heterostructures, computed through efficient real-space quantum transport methods, and using realistic tight-binding models parametrized from ab initio calculations. [...]
2017 - 10.1021/acs.nanolett.7b02364
Nano letters, Vol. 17, issue 8 (Sep. 2017) , p. 5078-5083  
9.
6 p, 1.4 MB Effects of dephasing on spin lifetime in ballistic spin-orbit materials / Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We theoretically investigate spin dynamics in spin-orbit-coupled materials. In the ballistic limit, the spin lifetime is dictated by dephasing that arises from energy broadening plus a nonuniform spin precession. [...]
2016 - 10.1103/PhysRevLett.116.086602
Physical review letters, Vol. 116, issue 8 (Feb. 2016) , art. 86602  
10.
12 p, 1.1 MB Large spin relaxation anisotropy and valley-Zeeman spin-orbit coupling in WSe2 /graphene/ h -BN heterostructures / Zihlmann, Simon (Universität Basel. Department of Physics) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Kedves, Máté (Budapesti Müszaki és Gazdaságtudományi Egyetem.Department of Physics) ; Watanabe, Kenji (National Institute for Material Science (Tsukuba, Japan)) ; Taniguchi, Takashi (National Institute for Material Science (Tsukuba, Japan)) ; Schönenberger, Christian (Universität Basel. Department of Physics) ; Makk, Péter (Universität Basel. Department of Physics)
Large spin-orbital proximity effects have been predicted in graphene interfaced with a transition-metal dichalcogenide layer. Whereas clear evidence for an enhanced spin-orbit coupling has been found at large carrier densities, the type of spin-orbit coupling and its relaxation mechanism remained unknown. [...]
2018 - 10.1103/PhysRevB.97.075434
Physical review B, Vol. 97, issue 7 (Feb. 2018) , p. 75434  

Artículos : Encontrados 17 registros   1 - 10siguiente  ir al registro:
Vea también: autores con nombres similares
¿Le interesa recibir alertas sobre nuevos resultados de esta búsqueda?
Defina una alerta personal vía correo electrónico o subscríbase al canal RSS.