UAB Digital Repository of Documents 8 records found  Search took 0.01 seconds. 
1.
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  
2.
11 p, 1.9 MB Quantum Hall effect in graphene with interface-induced spin-orbit coupling / Cysne, Tarik P. (Universidade Federal Do Rio de Janeiro) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Rocha, Alexandre Reily (Universidade Estadual Paulista (Brasil)) ; Rappoport, Tatiana G. (Universidade Federal Do Rio de Janeiro)
We consider an effective model for graphene with interface-induced spin-orbit coupling and calculate the quantum Hall effect in the low-energy limit. We perform a systematic analysis of the contribution of the different terms of the effective Hamiltonian to the quantum Hall effect (QHE). [...]
2018 - 10.1103/PhysRevB.97.085413
Physical Review B, Vol. 97, Issue 8 (February 2018) , art. 85413  
3.
7 p, 2.0 MB Finite-size correction scheme for supercell calculations in Dirac-point two-dimensional materials / Rocha, Claudia Gomes da (Trinity College Dublin) ; Rocha, Alexandre Reily (Massachusetts Institute of Technology) ; Venezuela, P. (Universidade Federal Fluminense) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Ferreira, Mauro S. (Trinity College Dublin)
Modern electronic structure calculations are predominantly implemented within the super cell representation in which unit cells are periodically arranged in space. Even in the case of non-crystalline materials, defect-embedded unit cells are commonly used to describe doped structures. [...]
2018 - 10.1038/s41598-018-27632-6
Scientific Reports, Vol. 8 (June 2018) , art. 9348  
4.
7 p, 4.6 MB Valley-polarized quantum transport generated by gauge fields in graphene / Settnes, Mikkel (Danmarks Tekniske Universitet. Department of Photonics Engineering) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on the possibility to simultaneously generate in graphene a bulk valley-polarized dissipative transport and a quantum valley Hall effect by combining strain-induced gauge fields and real magnetic fields. [...]
2017 - 10.1088/2053-1583/aa7cbd
2D Materials, Vol. 4, issue 3 (September 2017) , art. 31006  
5.
81 p, 4.0 MB Charge, spin and valley Hall effects in disordered grapheme / Cresti, Alessandro (Université Grenoble Alpes) ; Nikolíc, B.K. (University of Delaware. Department of Physics and Astronomy) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
The discovery of the integer quantum Hall effect in the early eighties of the last century, with highly precise quantization values for the Hall conductance in multiples of e2/h, has been the first fascinating manifestation of the topological state of matter driven by magnetic field and disorder, and related to the formation of non-dissipative current flow. [...]
2016 - 10.1393/ncr/i2016-10130-6
Rivista del nuovo cimento, Vol. 39, issue 12 (December 2016) , p. 587-667  
6.
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  
7.
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  
8.
9 p, 997.0 KB Giant spin lifetime anisotropy in graphene induced by proximity effects / Cummings, Aron W. (Institut Català de Nanociència i Nanotecnologia) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Fabian, Jaroslav (Universität Regensburg. Insitute for Theoretical Physics) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on fundamental aspects of spin dynamics in heterostructures of graphene and transition metal dichalcogenides (TMDCs). By using realistic models derived from first principles we compute the spin lifetime anisotropy, defined as the ratio of lifetimes for spins pointing out of the graphene plane to those pointing in the plane. [...]
2017 - 10.1103/PhysRevLett.119.206601
Physical review letters, Vol. 119 issue 20 (Nov. 2017) , p. 206601  

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1 García, J.N.
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