595 citations · 7.8k across the 110 of their papers we have counts for
89 papers · 1 filter
Spin-orbit torque emerging from orbital textures in centrosymmetric materials
Luis M. Canonico, Jose H. García, Stephan Roche
We unveil a hitherto concealed spin-orbit torque mechanism driven by orbital degrees of freedom in centrosymmetric two-dimensional transition metal dichalcogenides (focusing on PtS…
Tailoring giant quantum transport anisotropy in disordered nanoporous graphenes
Isaac Alcón, Aron Cummings, Stephan Roche
During the last 15 years bottom-up on-surface synthesis has been demonstrated as an efficient way to synthesize carbon nanostructures with atomic precision, opening the door to unp…
Electrical Control of Spin-polarized Topological Currents in Monolayer WTe
Jose H. Garcia, Jinxuan You, Monica García-Mota +6
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 us…
Generation and control of non-local chiral currents in graphene superlattices by orbital Hall effect
Juan Salvador-Sánchez, Luis M. Canonico, Ana Pérez-Rodríguez +15
Graphene-based superlattices offer a new materials playground to exploit and control a higher number of electronic degrees of freedom, such as charge, spin, or valley for disruptiv…
Giant Valley-Polarized Spin Splittings in Magnetized Janus Pt Dichalcogenides
Shahid Sattar, J. Andreas Larsson, C. M. Canali +2
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 fir…
Have Mysterious Topological Valley Currents Been Observed in Graphene Superlattices?
Stephan Roche, Stephen R. Power, Branislav K. Nikolić +2
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…
Van der Waals heterostructures for spintronics and opto-spintronics
Juan F. Sierra, Jaroslav Fabian, Roland K. Kawakami +2
The large variety of 2D materials and their co-integration in van der Waals (vdW) heterostructures enable innovative device engineering. In addition, their atomically-thin nature p…
Valley-Polarized Quantum Anomalous Hall Phase in Bilayer Graphene with Layer-Dependent Proximity Effects
Marc Vila, Jose H. Garcia, Stephan Roche
Realizations of some topological phases in two-dimensional systems rely on the challenge of jointly incorporating spin-orbit and magnetic exchange interactions. Here, we predict th…
Hinge Spin Polarization in Magnetic Topological Insulators Revealed by Resistance Switch
Pablo M. Perez-Piskunow, Stephan Roche
We report on the possibility to detect hinge spin polarization in magnetic topological insulators by resistance measurements. By implementing a three-dimensional model of magnetic…
Graphene on two-dimensional hexagonal BN, AlN, and GaN: Electronic, spin-orbit, and spin relaxation properties
Klaus Zollner, Aron W. Cummings, Stephan Roche +1
We investigate the electronic structure of graphene on a series of 2D hexagonal nitride insulators hXN, X = B, Al, and Ga, with DFT calculations. A symmetry-based model Hamiltonian…
Manipulation of Spin Transport in Graphene/Transition Metal Dichalcogenide Heterobilayers upon Twisting
Armando Pezo, Zeila Zanolli, Nils Wittemeier +4
Proximity effects are one of the pillars of exotic phenomena and technological applications of two dimensional materials. However, the interactions nature depends strongly on the m…
Observation of giant and tuneable thermal diffusivity of Dirac fluid at room temperature
Alexander Block, Alessandro Principi, Niels C. H. Hesp +8
Conducting materials typically exhibit either diffusive or ballistic charge transport. However, when electron-electron interactions dominate, a hydrodynamic regime with viscous cha…
Janus Monolayers of Magnetic Transition Metal Dichalcogenides as an All-in-One Platform for Spin-Orbit Torque
Idris Smaili, Slimane Laref, Jose H. Garcia +3
We theoretically predict that vanadium-based Janus dichalcogenide monolayers constitute an ideal platform for spin-orbit-torque memories. Using first principles calculations, we de…
Low-symmetry topological materials for large charge-to-spin interconversion: The case of transition metal dichalcogenide monolayers
Marc Vila, Chuang-Han Hsu, Jose H. Garcia +5
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 syst…
Nonlocal Spin Dynamics in the Crossover from Diffusive to Ballistic Transport
Marc Vila, Jose H. Garcia, Aron W. Cummings +4
Improved fabrication techniques have enabled the possibility of ballistic transport and unprecedented spin manipulation in ultraclean graphene devices. Spin transport in graphene i…
Valley Hall Effect and Non-Local Resistance in Locally Gapped Graphene
Thomas Aktor, Jose H. Garcia, Stephan Roche +2
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 non-loca…
Tunable room-temperature spin galvanic and spin Hall effects in van der Waals heterostructures
L. Antonio Benítez, Williams Savero Torres, Juan F. Sierra +5
Spin-orbit coupling stands as a powerful tool to interconvert charge and spin currents and to manipulate the magnetization of magnetic materials through the spin torque phenomena.…
Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene
Bogdan Karpiak, Aron W. Cummings, Klaus Zollner +8
Engineering two-dimensional material heterostructures by combining the best of different materials in one ultimate unit can offer a plethora of opportunities in condensed matter ph…
Exploring Event Horizons and Hawking Radiation through Deformed Graphene Membranes
Tommaso Morresi, Daniele Binosi, Stefano Simonucci +4
Analogue gravitational systems are becoming an increasing popular way of studying the behaviour of quantum systems in curved spacetime. Setups based on ultracold quantum gases in p…
Universal spin diffusion length in polycrystalline graphene
Aron W. Cummings, Simon M. -M. Dubois, Jean-Christophe Charlier +1
Graphene grown by chemical vapor deposition (CVD) is the most promising material for industrial-scale applications based on graphene monolayers. It also holds promise for spintroni…
Tunable Circular Dichroism and Valley Polarization in the Modified Haldane Model
Marc Vila, Nguyen Tuan Hung, Stephan Roche +1
We study the polarization dependence of optical absorption for the modified Haldane model, which exhibits antichiral edge modes in presence of sample boundaries and has been argued…
Charge and Spin Transport Anisotropy in Nanopatterned Graphene
Soren Schou Gregersen, Jose H. Garcia, Antti-Pekka Jauho +2
Anisotropic electronic transport is a possible route towards nanoscale circuitry design, particularly in two-dimensional materials. Proposals to introduce such a feature in pattern…
Linear Scaling Quantum Transport Methodologies
Zheyong Fan, Jose Hugo Garcia, Aron W. Cummings +5
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 m…
Room temperature spin Hall effect in graphene/MoS van der Waals heterostructures
C. K. Safeer, Josep Ingla-Aynés, Franz Herling +7
Graphene is an excellent material for long distance spin transport but allows little spin manipulation. Transition metal dichalcogenides imprint their strong spin-orbit coupling in…