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Depósito Digital de Documentos de la UAB Encontrados 383 registros  anterior11 - 20siguientefinal  ir al registro: La búsqueda tardó 0.01 segundos. 
11.
7 p, 5.2 MB Valley Hall effect and nonlocal resistance in locally gapped graphene / Aktor, Thomas (Technical University of Denmark. Center for Nanostructured Graphene) ; Garcia, José H (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Jauho, Antti-Pekka (Technical University of Denmark. Center for Nanostructured Graphene) ; Power, Stephen R. (Trinity College Dublin. School of Physics)
We report on the emergence of bulk, valley-polarized currents in graphene-based devices, driven by spatially varying regions of broken sublattice symmetry, and revealed by nonlocal resistance (RNL) fingerprints. [...]
2021 - 10.1103/PhysRevB.103.115406
Physical review B, Vol. 103, issue 11 (March 2021) , art. 115406  
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12.
12 p, 11.9 MB Disentangling orbital and valley Hall effects in bilayers of transition metal dichalcogenides / Cysne, Tarik P. (Universidade Federal Fluminense. Instituto de Física) ; Costa, Marcio (Universidade Federal Fluminense. Instituto de Física) ; Canonico, Luis M. (Institut Català de Nanociència i Nanotecnologia) ; Nardelli, M. Buongiorno. (University of North Texas. Department of Physics) ; Muniz, R. B. (Universidade Federal Fluminense. Instituto de Física) ; Rappoport, Tatiana G. (Universidade Federal Do Rio de Janeiro. Instituto de Física)
It has been recently shown that monolayers of transition metal dichalcogenides (TMDs) in the 2H structural phase exhibit relatively large orbital Hall conductivity plateaus within their energy band gaps, where their spin Hall conductivities vanish [Canonico et al. [...]
2021 - 10.1103/PhysRevLett.126.056601
Physical review letters, Vol. 126, issue 5 (Feb. 2021) , art. 56601  
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13.
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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14.
17 p, 1.3 MB Robustness of behaviorally induced oscillations in epidemic models under a low rate of imported cases / Juher, David (Universitat de Girona. Departament d'Informàtica, Matemàtica Aplicada i Estadística) ; Rojas, David (Universitat de Girona. Departament d'Informàtica, Matemàtica Aplicada i Estadística) ; Saldaña, Joan (Universitat de Girona. Departament d'Informàtica, Matemàtica Aplicada i Estadística)
This paper is concerned with the robustness of the sustained oscillations predicted by an epidemic ODE model defined on contact networks. The model incorporates the spread of awareness among individuals and, moreover, a small inflow of imported cases. [...]
2020 - 10.1103/PhysRevE.102.052301
Physical Review E, Vol. 102, Issue 5 (November 2020) , art. 52301  
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15.
12 p, 5.5 MB Mechanical softness of ferroelectric 180° domain walls / Stefani, Christina (Institut Català de Nanociència i Nanotecnologia) ; Ponet, Louis (Scuola Normale Superiore (Pisa, Itàlia)) ; Shapovalov, Konstantin (Institut de Ciència de Materials de Barcelona) ; Chen, Peng (Italian Institute of Technology) ; Langenberg, Eric (Cornell University. Department of Materials Science and Engineering) ; Schlom, Darrell G. (Kavli Institute at Cornell for Nanoscale Science) ; Artyukhin, Sergey (Italian Institute of Technology) ; Stengel, Massimiliano (Institució Catalana de Recerca i Estudis Avançats) ; Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
Using scanning probe microscopy, we measure the out-of-plane mechanical response of ferroelectric 180° domain walls and observe that, despite separating domains that are mechanically identical, the walls appear mechanically distinct-softer-compared to the domains. [...]
2020 - 10.1103/PhysRevX.10.041001
Physical Review, Vol. 10, issue 4 (Oct.-Des. 2020) , art. 041001  
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16.
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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17.
6 p, 1.1 MB Transport fingerprints at graphene superlattice Dirac points induced by a boron nitride substrate / Martínez Gordillo, Rafael (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Institut Català de Nanociència i Nanotecnologia) ; Pruneda, Miguel (Institut Català de Nanociència i Nanotecnologia)
We report peculiar transport fingerprints at the secondary Dirac points created by the interaction between graphene and boron nitride layers. By performing ab initio calculations, the electronic characteristics of the moiré patterns produced by the interaction between layers are first shown to be in good agreement with experimental data, and further used to calibrate the tight-binding model implemented for the transport study. [...]
2014 - 10.1103/PhysRevB.89.161401
Physical review B : Condensed matter and materials physics, Vol. 89, issue 16 (April 2014) , art. 161401  
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18.
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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19.
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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20.
6 p, 509.4 KB Spin-dependent electron scattering at graphene edges on Ni(111) / Garcia-Lekue, Aran (Donostia International Physics Center) ; Balashov, Timofey (Institut Català de Nanociència i Nanotecnologia) ; Olle, M. (Institut Català de Nanociència i Nanotecnologia) ; Ceballos, Gustavo (Institut Català de Nanociència i Nanotecnologia) ; Arnau Pino, Andrés (IKERBASQUE) ; Gambardella, Pietro (Institut Català de Nanociència i Nanotecnologia) ; Sanchez-Portal, Daniel (CSIC-UPV - Centro de Física de Materiales (CFM)) ; Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
We investigate the scattering of surface electrons by the edges of graphene islands grown on Ni(111). By combining local tunneling spectroscopy and ab initio electronic structure calculations we find that the hybridization between graphene and Ni states results in strongly reflecting graphene edges. [...]
2014 - 10.1103/PhysRevLett.112.066802
Physical review letters, Vol. 112, issue 6 (Feb. 2014) , art. 66802  
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Depósito Digital de Documentos de la UAB : Encontrados 383 registros   anterior11 - 20siguientefinal  ir al registro:
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