Resultats globals: 9 registres trobats en 0.02 segons.
Articles, 9 registres trobats
Articles 9 registres trobats  
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.
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  
3.
17 p, 868.1 KB Impact of vacancies on diffusive and pseudodiffusive electronic transport in graphene / Cresti, Alessandro (Université Grenoble Alpes) ; Louvet, Thibaud (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Institut Català de Nanociència i Nanotecnologia) ; Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Lenarczyk, Pawel (Institut Català de Nanociència i Nanotecnologia) ; Huhs, Georg (Centre Nacional de Supercomputació) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We present a survey of the effect of vacancies on quantum transport in graphene, exploring conduction regimes ranging from tunnelling to intrinsic transport phenomena. Vacancies, with density up to 2%, are distributed at random either in a balanced manner between the two sublattices or in a totally unbalanced configuration where only atoms sitting on a given sublattice are randomly removed. [...]
2013 - 10.3390/cryst3020289
Crystals, Vol. 3, Issue 2 (June 2013) , p. 289-305  
4.
7 p, 503.0 KB Efficient linear scaling approach for computing the Kubo Hall conductivity / Ortmann, Frank (Technische Universität Dresden) ; Leconte, Nicolas (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report an order-N approach to compute the Kubo Hall conductivity for disorderd two-dimensional systems reaching tens of millions of orbitals, and realistic values of the applied external magnetic fields (as low as a few Tesla). [...]
2015 - 10.1103/PhysRevB.91.165117
Physical review B, Vol. 91, issue 16 (April 2015) , art. 165117  
5.
11 p, 9.8 MB Ab initio study of electron-phonon coupling in rubrene / Ordejón Rontomé, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Boskovic, Desanka (Institut Català de Nanociència i Nanotecnologia) ; Panhans, Michel (Technische Universität Dresden) ; Ortmann, Frank (Technische Universität Dresden)
The use of ab initio methods for accurate simulations of electronic, phononic, and electron-phonon properties of molecular materials such as organic crystals is a challenge that is often tackled stepwise based on molecular properties calculated in gas phase and perturbatively treated parameters relevant for solid phases. [...]
2017 - 10.1103/PhysRevB.96.035202
Physical review B, Vol. 96, Núm. 3 (July 2017) , art. 035202  
6.
6 p, 1.1 MB Unconventional features in the quantum Hall regime of disordered graphene : Percolating impurity states and Hall conductance quantization / Leconte, Nicolas (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Technische Universität Dresden) ; Cresti, Alessandro (Université Grenoble Alpes) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on the formation of critical states in disordered graphene, at the origin of variable and unconventional transport properties in the quantum Hall regime, such as a zero-energy Hall conductance plateau in the absence of an energy band gap and Landau-level degeneracy breaking. [...]
2016 - 10.1103/PhysRevB.93.115404
Physical review B, Vol. 93, Núm. 11 (March 2016) , p. 115404  
7.
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  
8.
15 p, 378.5 KB Pseudospin-driven spin relaxation mechanism in graphene / Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Institut Català de Nanociència i Nanotecnologia) ; Soriano, David (Institut Català de Nanociència i Nanotecnologia) ; Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Universitat Autònoma de Barcelona. Departament de Física.
The prospect of transporting spin information over long distances in graphene, possible because of its small intrinsic spin-orbit coupling (SOC) and vanishing hyperfine interaction, has stimulated intense research exploring spintronics applications. [...]
2014 - 10.1038/nphys3083
Nature Physics, Vol. 10, Núm. 11 (September 2014) , p. 857-863  
9.
6 p, 3.1 MB Scaling properties of charge transport in polycrystalline graphene / Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Kotakoski, Jani (Universität Wien. Faculty of Physics) ; Louvet, Thibaud (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Institut Català de Nanociència i Nanotecnologia) ; Meyer, Jannik C. (Universität Wien. Faculty of Physics) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Polycrystalline graphene is a patchwork of coalescing graphene grains of varying lattice orientations and size, resulting from the chemical vapor deposition (CVD) growth at random nucleation sites on metallic substrates. [...]
2013 - 10.1021/nl400321r
Nano letters, Vol. 13, issue 4 (April 2013) , p. 1730-1735  

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