Resultats globals: 25 registres trobats en 0.02 segons.
Articles, 23 registres trobats
Documents de recerca, 2 registres trobats
Articles 23 registres trobats  1 - 10següentfinal  anar al registre:
1.
7 p, 1.1 MB Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides / Sattar, Shahid (Linnaeus University. Department of Physics and Electrical Engineering) ; Larsson, J. Andreas (Luleå University of Technology. Department of Engineering Sciences and Mathematics) ; Canali, C.M. (Linnaeus University. Department of Physics and Electrical Engineering) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia)
We reveal giant proximity-induced magnetism and valley-polarization effects in Janus Pt dichalcogenides (such as SPtSe), when bound to the europium oxide (EuO) substrate. Using first-principles simulations, it is surprisingly found that the charge redistribution, resulting from proximity with EuO, leads to the formation of two K and K' valleys in the conduction bands. [...]
2022 - 10.1103/PhysRevB.105.L041402
Physical review B, Vol. 105, issue 4 (Jan. 2022) , art. A100  
2.
6 p, 1.2 MB Electrical control of spin-polarized topological currents in monolayer WTe2 / Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; You, Jinxuan (Universitat Autònoma de Barcelona. Departament de Física) ; García-Mota, Mónica (Simune Atomistics S.L.) ; Koval, Peter (Simune Atomistics S.L.) ; Ordejon, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Cuadrado, Ramón (Institut Català de Nanociència i Nanotecnologia) ; Verstraete, Matthieu J. (Université de Liège. Complex and Entangled Systems from Atoms to Materials) ; Zanolli, Zeila (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We evidence the possibility for coherent electrical manipulation of the spin orientation of topologically protected edge states in a low-symmetry quantum spin Hall insulator. By using a combination of ab initio simulations, symmetry-based modeling, and large-scale calculations of the spin Hall conductivity, it is shown that small electric fields can efficiently vary the spin textures of edge currents in monolayer 1T'-WTe2 by up to a 90-degree spin rotation, without jeopardizing their topological character. [...]
2022 - 10.1103/PhysRevB.106.L161410
Physical review B, Vol. 106, issue 16 (Oct. 2022) , art. L161410  
3.
27 p, 2.2 MB Magnetism, symmetry and spin transport in van der Waals layered systems / Kurebayashi, Hidekazu (London Centre for Nanotechnology. UCL) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Khan, Safe (London Centre for Nanotechnology. UCL) ; Sinova, Jairo (Academy of Sciences of the Czech Republic. Institute of Physics) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
The discovery of an ever-increasing family of atomic layered magnetic materials, together with the already established vast catalogue of strong spin-orbit coupling and topological systems, calls for some guiding principles to tailor and optimize novel spin transport and optical properties at their interfaces. [...]
2022 - 10.1038/s42254-021-00403-5
Nature Reviews Physics, Vol. 4, issue 3 (March 2022) , p. 150-166  
4.
21 p, 7.4 MB Control of spin-charge conversion in van der Waals heterostructures / Galceran, Regina (Institut Català de Nanociència i Nanotecnologia) ; Tian, Bo (King Abdullah University of Science and Technology) ; Li, Junzhu (King Abdullah University of Science and Technology) ; Bonell, Frédéric (University of Grenoble Alpes. Spintec) ; Jamet, Matthieu (University of Grenoble Alpes. Spintec) ; Vergnaud, Céline (University of Grenoble Alpes. Spintec) ; Marty, Alain (University of Grenoble Alpes. Spintec) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Sierra, Juan F. (Institut Català de Nanociència i Nanotecnologia) ; Costache, Marius Vasile (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ; Manchon, Auréliene (Aix-Marseille Université) ; Zhang, Xixiang (King Abdullah University of Science and Technology) ; Schwingenschlögl, Udo (King Abdullah University of Science and Technology)
The interconversion between spin and charge degrees of freedom offers incredible potential for spintronic devices, opening routes for spin injection, detection, and manipulation alternative to the use of ferromagnets. [...]
2021 - 10.1063/5.0054865
APL materials, Vol. 9, issue 10 (Oct. 2021) , art. 100901  
5.
9 p, 750.9 KB Low-symmetry topological materials for large charge-to-spin interconversion : the case of transition metal dichalcogenide monolayers / Vila Tusell, Marc (Universitat Autònoma de Barcelona. Departament de Física) ; Hsu, Chuang-Han (National University of Singapore. Department of Electrical and Computer Engineering) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Benítez, L. Antonio (Institut Català de Nanociència i Nanotecnologia) ; Waintal, Xavier (Université Grenoble Alpes. Commissariat à l'énergie atomique et aux énergies alternatives) ; Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ; Pereira, Víctor M. (National University of Singapore. Centre for Advanced 2D Materials and Graphene Research Centre) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
The spin polarization induced by the spin Hall effect (SHE) in thin films typically points out of the plane. This is rooted on the specific symmetries of traditionally studied systems, not in a fundamental constraint. [...]
2021 - 10.1103/PhysRevResearch.3.043230
Physical Review Research, Vol. 3, issue 4 (Dec. 2021) , art. 43230  
6.
5 p, 656.4 KB Have mysterious topological valley currents been observed in graphene superlattices? / Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Power, Stephen R. (Trinity College Dublin. School of Physics) ; Nikolić, Branislav K. (University of Delaware. Department of Physics and Astronomy) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Jauho, Antti-Pekka (Technical University of Denmark. Center for Nanostructured Graphene)
We provide a critical discussion concerning the claim of topological valley currents, driven by a global Berry curvature and valley Hall effect proposed in recent literature. After pointing out a major inconsistency of the theoretical scenario proposed to interpret giant nonlocal resistance, we discuss various possible alternative explanations and open directions of research to solve the mystery of nonlocal transport in graphene superlattices.
2022 - 10.1088/2515-7639/ac452a
JPhys materials, Vol. 5, issue 2 (April 2022) , art. 21001  
7.
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  
8.
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  
9.
18 p, 1.5 MB Tunable room-temperature spin galvanic and spin Hall effects in van der Waals heterostructures / Benítez, L. Antonio (Institut Català de Nanociència i Nanotecnologia) ; Savero Torres, Williams Fernando (Institut Català de Nanociència i Nanotecnologia) ; Sierra, Juan F. (Institut Català de Nanociència i Nanotecnologia) ; Timmermans, Matias (Institut Català de Nanociència i Nanotecnologia) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Costache, Marius Vasile (Institut Català de Nanociència i Nanotecnologia) ; Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia)
Spin-orbit coupling stands as a powerful tool to interconvert charge and spin currents and to manipulate the magnetization of magnetic materials through spin-torque phenomena. However, despite the diversity of existing bulk materials and the recent advent of interfacial and low-dimensional effects, control of this interconversion at room temperature remains elusive. [...]
2020 - 10.1038/s41563-019-0575-1
Nature materials, Vol. 19, issue 2 (Feb. 2020) , p. 170-175  
10.
27 p, 986.9 KB Magnetism, spin dynamics, and quantum transport in two-dimensional systems / Savero Torres, Williams Fernando (Institut Català de Nanociència i Nanotecnologia) ; Sierra, Juan F. (Institut Català de Nanociència i Nanotecnologia) ; Benítez, L. Antonio (Institut Català de Nanociència i Nanotecnologia) ; Bonell, Frédéric (Université Grenoble-Alpes) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia)
Two-dimensional (2D) quantum materials offer a unique platform to explore mesoscopic phenomena driven by interfacial and topological effects. Their tunable electric properties and bidimensional nature enable their integration into sophisticated heterostructures with engineered properties, resulting in the emergence of new exotic phenomena not accessible in other platforms. [...]
2020 - 10.1557/mrs.2020.121
MRS Bulletin, Vol. 45, issue 5 (May 2020) , p. 357-365  

Articles : 23 registres trobats   1 - 10següentfinal  anar al registre:
Documents de recerca 2 registres trobats  
1.
11 p, 1.7 MB Manipulation of spin transport in graphene/transition metal dichalcogenide heterobilayers upon twisting / Pezo, Armando (Institut Català de Nanociència i Nanotecnologia) ; Zanolli, Zeila (Institut Català de Nanociència i Nanotecnologia) ; Wittemeier, Nils (Institut Català de Nanociència i Nanotecnologia) ; Ordejon, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Fazzio, Adalberto (Brazilian Nanotechnology National Laboratory) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia)
Proximity effects between layered materials trigger a plethora of novel and exotic quantum transport phenomena. Besides, the capability to modulate the nature and strength of proximity effects by changing crystalline and interfacial symmetries offers a vast playground to optimize physical properties of relevance for innovative applications. [...]
2021 - 10.48550/arXiv.2011.06714  
2.
96 p, 3.8 MB Utilidad de la Herniectomía y Discectomía Percutánea guiada por Tomografía Computarizada / Cifrián Pérez, Manuel ; Martínez Noguera, Antonio, dir. ; García Vila, José Hermenegildo, dir. ; Martínez Noguera, Antonio, dir.
L'objectiu principal d'aquest estudi és avaluar l'eficàcia de la herniectomía percutània guiada mitjançant TC i fluoroscòpia. Es tracta d'un nou tipus de tractament alternatiu a la cirurgia, i que en el nostre cas hem avaluat per a pacients que presenten dolor radicular causat per hèrnia discal lumbar i refractari a tractament conservador. [...]
El objetivo principal de este estudio es evaluar la eficacia de la herniectomía percutánea guiada mediante TC y fluoroscopia. Se trata de un nuevo tipo de tratamiento alternativo a la cirugía, y que en nuestro caso hemos evaluado para pacientes que presentan dolor radicular causado por hernia discal lumbar y refractario a tratamiento conservador. [...]
The main objective of this study is to evaluate the efficacy of CT- and fluoroscopy-guided percutaneous herniectomy. It is a new type of alternative treatment to surgery, and in our case, we have evaluated the treatment for patients with radicular pain caused by lumbar disc herniation that showed no improvement after conservative medical treatment. [...]

2021  

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