Resultados globales: 46 registros encontrados en 0.02 segundos.
Artículos, Encontrados 45 registros
Documentos de investigación, Encontrados 1 registros
Artículos Encontrados 45 registros  1 - 10siguientefinal  ir al registro:
1.
12 p, 1.6 MB Spin Proximity Effects in Graphene/Topological Insulator Heterostructures / Song, Kenan (Institut Català de Nanociència i Nanotecnologia) ; Soriano, David (QuantaLab and International Iberian Nanotechnology Laboratory) ; Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Robles, Roberto (Institut Català de Nanociència i Nanotecnologia) ; Ordejón Rontomé, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Enhancing the spin-orbit interaction in graphene, via proximity effects with topological insulators, could create a novel 2D system that combines nontrivial spin textures with high electron mobility. [...]
2018 - 10.1021/acs.nanolett.7b05482
Nano letters, Vol. 18, Issue 3 (March 2018) , p. 2033-2039  
2.
7 p, 3.9 MB Tunable circular dichroism and valley polarization in the modified Haldane model / Vila Tusell, Marc (Universitat Autònoma de Barcelona. Departament de Física) ; Hung, Nguyen Tuan (Tohoku University (Japó). Department of Physics) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Saito, Riichiro (Tohoku University (Japó). Department of Physics)
We study the polarization dependence of optical absorption for a modified Haldane model, which exhibits antichiral edge modes in the presence of sample boundaries and has been argued to be realizable in transition metal dichalcogenides or Weyl semimetals. [...]
2019 - 10.1103/PhysRevB.99.161404
Physical review B, Vol. 99, issue 16 (April 2019) , art. 161404  
3.
81 p, 9.3 MB Nonvolatile Memories Based on Graphene and Related 2D Materials / Bertolazzi, Simone (Université de Strasbourg) ; Bondavalli, Paolo (Chemical and Multifunctional Materials Lab) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; San, Tamer (Texas Instruments) ; Choi, Sung-Yool (School of Electrical Engineering. Graphene/2D Materials Research Center) ; Colombo, Luigi (University of Texas at Dallas. Department of Materials Science and Engineering) ; Bonaccorso, Francesco (BeDimensional Spa) ; Samorì, Paolo (Université de Strasbourg)
The pervasiveness of information technologies is generating an impressive amount of data, which need to be accessed very quickly. Nonvolatile memories (NVMs) are making inroads into high-capacity storage to replace hard disk drives, fuelling the expansion of the global storage memory market. [...]
2019 - 10.1002/adma.201806663
Advanced materials, Vol. 31, Issue 10 (March 2019) , art. 1806663  
4.
Green function, quasi-classical Langevin and Kubo-Greenwood methods in quantum thermal transport / Sevinçli, Hâldun (Izmir Institute of Technology) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Cuniberti, Gianaurelio (Dresden Center for Computational Materials Science) ; Brandbyge, Mads (Technical University of Denmark) ; Gutiérrez, Rafael (Institute for Materials Science and Max Bergmann Center of Biomaterials) ; Medrano Sandonas, Leonardo (Max Planck Institute for Physics of Complex Systems)
With the advances in fabrication of materials with feature sizes at the order of nanometers, it has been possible to alter their thermal transport properties dramatically. Miniaturization of device size increases the power density in general, hence faster electronics require better thermal transport, whereas better thermoelectric applications require the opposite. [...]
2019 - 10.1088/1361-648X/ab119a
Journal of Physics Condensed Matter, Vol. 31, Núm. 27 (July 2019) , art. 273003  
5.
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  
6.
8 p, 505.6 KB Quantum transport in chemically functionalized graphene at high magnetic field : Defect-induced critical states and breakdown of electron-hole symmetry / Leconte, Nicolas (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Institut Català de Nanociència i Nanotecnologia) ; Cresti, Alessandro (Université Grenoble Alpes) ; Charlier, Jean Christophe (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Unconventional magnetotransport fingerprints in the quantum Hall regime (with applied magnetic fields from one to several tens of Tesla) in chemically functionalized graphene are reported. Upon chemical adsorption of monoatomic oxygen (from 0. [...]
2014 - 10.1088/2053-1583/1/2/021001
2D Materials, Vol. 1, Núm. 2 (September 2014) , art. 21001  
7.
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  
8.
35 p, 1.3 MB Room-temperature spin hall effect in graphene/MoS2 van der Waals heterostructures / Safeer, C.K. (CIC NanoGUNE) ; Ingla-Aynés, Josep (CIC NanoGUNE) ; Herling, Franz (CIC NanoGUNE) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Vila Tusell, Marc (Institut Català de Nanociència i Nanotecnologia) ; Ontoso, Nerea (CIC NanoGUNE) ; Calvo, M. Reyes (IKERBASQUE. Basque Foundation for Science) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Hueso, Luis E. (IKERBASQUE. Basque Foundation for Science) ; Casanova, Fèlix (IKERBASQUE. Basque Foundation for Science)
Graphene is an excellent material for long-distance spin transport but allows little spin manipulation. Transition-metal dichalcogenides imprint their strong spin-orbit coupling into graphene via the proximity effect, and it has been predicted that efficient spin-to-charge conversion due to spin Hall and Rashba-Edelstein effects could be achieved. [...]
2019 - 10.1021/acs.nanolett.8b04368
Nano letters, Vol. 19, Issue 2 (February 2019) , p. 1074-1082  
9.
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  
10.
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  

Artículos : Encontrados 45 registros   1 - 10siguientefinal  ir al registro:
Documentos de investigación Encontrados 1 registros  
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  

Vea también: autores con nombres similares
4 Roche, S.
1 Roche, Stephan,
¿Le interesa recibir alertas sobre nuevos resultados de esta búsqueda?
Defina una alerta personal vía correo electrónico o subscríbase al canal RSS.