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Resultados globales: 35 registros encontrados en 0.01 segundos.
Artículos, Encontrados 34 registros
Documentos de investigación, Encontrados 1 registros
Artículos Encontrados 34 registros  1 - 10siguientefinal  ir al registro:
1.
7 p, 4.9 MB All-carbon approach to inducing electrical and optical anisotropy in graphene / Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia)
Owing to its array of unique properties, graphene is a promising material for a wide variety of applications. Being two-dimensional, the properties of graphene are also easily tuned via proximity to other materials. [...]
2021 - 10.1063/5.0062521
AIP advances, Vol. 11, issue 11 (Nov. 2021) , art. 115007  
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2.
8 p, 3.0 MB Unveiling the multiradical character of the biphenylene network and its anisotropic charge transport / Alcón, Isaac (Institut Català de Nanociència i Nanotecnologia) ; Calogero, Gaetano (CNR Institute for Microelectronics and Microsystems) ; Papior, Nick (Technical University of Denmark) ; Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia) ; Song, Kenan (King Abdullah University of Science and Technology) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Brandbyge, Mads (Center for Nanostructured Graphene) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Recent progress in the on-surface synthesis and characterization of nanomaterials is facilitating the realization of new carbon allotropes, such as nanoporous graphenes, graphynes, and 2D π-conjugated polymers. [...]
2022 - 10.1021/jacs.2c02178
Journal of the American Chemical Society, Vol. 144, Issue 18 (April 2022) , p. 8278-8285  
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3.
13 p, 3.8 MB Observation of giant and tunable thermal diffusivity of a Dirac fluid at room temperature / Block, Alexander (Institut Català de Nanociència i Nanotecnologia) ; Principi, Alessandro (University of Manchester. School of Physics and Astronomy) ; Hesp, Niels C. H. (Institut de Ciències Fotòniques) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Liebel, Matz (Institut de Ciències Fotòniques) ; Watanabe, Kenji (National Institute for Materials Science. Research Center for Functional Materials (Tsukuba, Japó)) ; Taniguchi, Takashi (National Institute for Materials Science. International Center for Materials Nanoarchitectonics (Tsukuba, Japó)) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Koppens, Frank (Institució Catalana de Recerca i Estudis Avançats) ; van Hulst, Niek F.. (Institut de Ciències Fotòniques) ; Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia)
Conducting materials typically exhibit either diffusive or ballistic charge transport. When electron-electron interactions dominate, a hydrodynamic regime with viscous charge flow emerges -. More stringent conditions eventually yield a quantum-critical Dirac-fluid regime, where electronic heat can flow more efficiently than charge -. [...]
2021 - 10.1038/s41565-021-00957-6
Nature Nanotechnology, Vol. 16 (Nov. 2021) , p. 1195-1200  
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4.
69 p, 4.2 MB Linear scaling quantum transport methodologies / Fan, Zheyong (Bohai University. School of Mathematics and Physics) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Barrios Vargas, José Eduardo (Universidad Nacional Autónoma de México. Departamento de Física y Química Teórica) ; Panhans, Michel (Technische Universität Dresden. Center for Advancing Electronics) ; Harju, Ari (Varian Medical Systems Finland) ; Ortmann, Frank (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
In recent years, predictive computational modeling has become a cornerstone for the study of fundamental electronic, optical, and thermal properties in complex forms of condensed matter, including Dirac and topological materials. [...]
2021 - 10.1016/j.physrep.2020.12.001
Physics Reports, Vol. 903 (April 2021) , p. 1-69  
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5.
18 p, 7.5 MB Graphene on two-dimensional hexagonal BN, AlN, and GaN : electronic, spin-orbit, and spin relaxation properties / Zollner, Klaus (University of Regensburg. Institute for Theoretical Physics) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Fabian, Jaroslav (University of Regensburg. Institute for Theoretical Physics)
We investigate the electronic band structure of graphene on a series of two-dimensional hexagonal nitride insulators hXN, X=B, Al, and Ga, with first-principles calculations. A symmetry-based model Hamiltonian is employed to extract orbital parameters and spin-orbit coupling (SOC) from the low-energy Dirac bands of the proximitized graphene. [...]
2021 - 10.1103/PhysRevB.103.075129
Physical review B, Vol. 103, issue 7 (Feb. 2021) , art. 75129  
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6.
8 p, 458.3 KB Emergence of intra-particle entanglement and time-varying violation of Bell's inequality in Dirac matter / De Moraes Araújo, Bruna Gabrielly (Universitat Autònoma de Barcelona. Departament de Física) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We demonstrate the emergence and dynamics of intraparticle entanglement in massless Dirac fermions. This entanglement, generated by spin-orbit coupling, arises between the spin and sublattice pseudospin of electrons in graphene. [...]
2020 - 10.1103/PhysRevB.102.041403
Physical review B, Vol. 102, issue 4 (Jul. 2020) , art. 041403  
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7.
12 p, 2.3 MB Multiple quantum phases in graphene with enhanced spin-orbit coupling : from the quantum spin hall regime to the spin hall effect and a robust metallic state / Cresti, Alessandro (IMEP-LAHC) ; Dinh, Van Tuan (Universitat Autònoma de Barcelona. Departament de Física) ; Soriano, David (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report an intriguing transition from the quantum spin Hall phase to the spin Hall effect upon segregation of thallium adatoms adsorbed onto a graphene surface. Landauer-Büttiker and Kubo-Greenwood simulations are used to access both edge and bulk transport physics in disordered thallium-functionalized graphene systems of realistic sizes. [...]
2014 - 10.1103/PhysRevLett.113.246603
Physical review letters, Vol. 113, issue 24 (Dec. 2014) , art. 246603  
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8.
7 p, 981.7 KB Anisotropic behavior of quantum transport in graphene superlattices : coexistence of ballistic conduction with Anderson insulating regime / Pedersen, Jesper Goor (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on the possibility to generate highly anisotropic quantum conductivity in disordered graphene-based superlattices. Our quantum simulations, based on an efficient real-space implementation of the Kubo-Greenwood formula, show that in disordered graphene superlattices the strength of multiple scattering phenomena can strongly depend on the transport measurement geometry. [...]
2014 - 10.1103/PhysRevB.89.165401
Physical review B : Condensed matter and materials physics, Vol. 89, issue 16 (April 2014) , art. 165401  
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9.
6 p, 979.5 KB Anomalous dissipation mechanism and Hall quantization limit in polycrystalline graphene grown by chemical vapor deposition / Lafont, F. (Laboratoire National de Métrologie et d'Essais) ; Ribeiro-Palau, Rebeca (Laboratoire National de Métrologie et d'Essais) ; Han, Z. (Institut polytechnique de Grenoble. Institut Néel) ; Cresti, Alessandro (Institut polytechnique de Grenoble. Institute of Microelectronics, Electromagnetism and Photonics) ; Delvallée, Alexandra (Laboratoire National de Métrologie et d'Essais) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Bouchiat, Vincent (Institut polytechnique de Grenoble. Institut Néel) ; Ducourtieux, Sebastien (Laboratoire National de Métrologie et d'Essais) ; Schopfer, F. (Laboratoire National de Métrologie et d'Essais) ; Poirier, W. (Laboratoire National de Métrologie et d'Essais)
We report on the observation of strong backscattering of charge carriers in the quantum Hall regime of polycrystalline graphene, grown by chemical vapor deposition, which alters the accuracy of the Hall resistance quantization. [...]
2014 - 10.1103/PhysRevB.90.115422
Physical review B : Condensed matter and materials physics, Vol. 90, issue 11 (Sep. 2014) , art. 115422  
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10.
11 p, 213.0 KB Physical model of the contact resistivity of metal-graphene junctions / Chaves Romero, Ferney Alveiro (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Jiménez Jiménez, David (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
While graphene-based technology shows great promise for a variety of electronic applications, including radio-frequency devices, the resistance of the metal-graphene contact is a technological bottleneck for the realization of viable graphene electronics. [...]
2014 - 10.1063/1.4874181
Journal of applied physics, Vol. 115, issue 16 (April 2014) , art. 164513  
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Artículos : Encontrados 34 registros   1 - 10siguientefinal  ir al registro:
Documentos de investigación Encontrados 1 registros  
1.
201 p, 31.4 MB Theoretical Study of Spin Dynamics in Two-Dimensional Quantum Materials / Vila Tusell, Marc ; Roche, Stephan Jean Louis, dir. ; Cummings, Aron, dir. ; Valenzuela, Sergio O, dir. ; Navau Ros, Carles, dir.
El camp de l'espintrònica té l'objectiu d'utilitzar el grau de llibertat d'espín de l'electró per emmagatzemar, transportar i manipular informació en dispositius electrònics de nova generació. [...]
El campo de la espintrónica tiene como objetivo utilizar el grado de libertad de espín para almacenar, transportar y manipular información en dispositivos electrónicos de próxima generación. En esta tesis, utilizo metodologías de transporte cuántico para simular la dinámica de espín en dispositivos hechos de materiales bidimensionales. [...]
The field of spintronics aims at using the spin degree of freedom to store, transport and manipulate information in next-generation electronic devices. In this thesis, I use quantum transport methodologies to simulate spin dynamics in devices made of two-dimensional materials. [...]
2020  
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Vea también: autores con nombres similares
1 Cummings, A. W.
1 Cummings, Aron,
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