121 citations · 538 across the 18 of their papers we have counts for
15 papers · 1 filter
Tuning magnetism in graphene nanoribbons via strain and adatoms
Pablo Moles, Hernán Santos, Francisco Domínguez-Adame +1
We investigate the impact of strain and adsorbed H adatoms on the magnetic properties of zigzag graphene nanoribbons (ZGNRs) using a combination of tight-binding and density functi…
Direct visualization and effects of atomic-scale defects on the optoelectronic properties of hexagonal boron nitride
Pablo Ares, Hernan Santos, Snezana Lazic +7
Hexagonal boron nitride (hBN) is attracting a lot of attention in the last years, thanks to its many remarkable properties. These include the presence of single-photon emitters wit…
Charge-spin interconversion in graphene-based systems from density functional theory
Maedeh Rassekh, Hernán Santos, Andrea Latge +3
We present a methodology to address, from first principles, charge-spin interconversion in two-dimensional materials with spin-orbit coupling. Our study relies on an implementation…
Spin-polarized currents in corrugated graphene nanoribbons
Hernán Santos, A. Latgé, L. Brey +1
We investigate the production of spin-polarized currents in corrugated graphene nanoribbons. Such corrugations are modeled as multiple regions with Rashba spin-orbit interactions,…
Strong Modulation of Optical Properties in Rippled 2D GaSe via Strain Engineering
David Maeso, Sahar Pakdel, Hernan Santos +4
Few-layer GaSe is one of the latest additions to the family of 2D semiconducting crystals whose properties under strain are still relatively unexplored. Here, we study rippled nano…
Defect-enhanced Rashba spin-polarized currents in carbon nanotubes
Hernán Santos, Leonor Chico, J. E. Alvarellos +1
The production of spin-polarized currents in pristine carbon nanotubes with Rashba spin-orbit interaction has been shown to be very sensitive to the symmetry of the tubes and the g…
All-electrical production of spin-polarized currents in carbon nanotubes: Rashba spin-orbit interaction
Hernán Santos, A. Latgé, J. E. Alvarellos +1
We study the effect of the Rashba spin-orbit interaction in the quantum transport of carbon nanotubes with arbitrary chiralities. For certain spin directions, we find a strong spin…
Anomalous exchange interaction between intrinsic spins in conducting graphene systems
H. Santos, David Soriano, J. J. Palacios
We address the nature and possible observable consequences of singular one-electron states that appear when strong defects are introduced in the metallic family of graphene, namely…
Interplay between symmetry and spin-orbit coupling in graphene nanoribbons
Hernán Santos, M. C. Muñoz, M. P. López-Sancho +1
We study the electronic structure of chiral and achiral graphene nanoribbons with symmetric edges, including curvature and spin-orbit effects. Curved ribbons show spin-split bands,…
Van der Waals interaction in magnetic bilayer graphene nanoribbons
H. Santos, A. Ayuela, L. Chico +1
We study the interaction energy between two graphene nanoribbons by first principles calculations, including van der Waals interactions and spin polarization. For ultranarrow zigza…
Edge states and flat bands in graphene nanoribbons with arbitrary geometries
W. Jaskolski, A. Ayuela, M. Pelc +2
We prescribe general rules to predict the existence of edge states and zero-energy flat bands in graphene nanoribbons and graphene edges of arbitrary shape. No calculations are nee…
Gate-controlled conductance through bilayer graphene ribbons
J. W. González, H. Santos, E. Prada +2
We study the conductance of a biased bilayer graphene flake with monolayer nanoribbon contacts. We find that the transmission through the bilayer ribbon strongly depends on the app…
Electronic transport through bilayer graphene flakes
J. W. Gonzalez, H. Santos, M. Pacheco +2
We investigate the electronic transport properties of a bilayer graphene flake contacted by two monolayer nanoribbons. Such a finite-size bilayer flake can be built by overlapping…
Interface States in Carbon Nanotube Junctions: Rolling up graphene
H. Santos, A. Ayuela, W. Jaskólski +2
We study the origin of interface states in carbon nanotube intramolecular junctions between achiral tubes. By applying the Born-von Karman boundary condition to an interface betwee…
Carbon nanoelectronics: unzipping tubes into graphene ribbons
H. Santos, L. Chico, L. Brey
We report on the transport properties of novel carbon nanostructures made of partially unzipped carbon nanotubes, which can be regarded as a seamless junction of a tube and a nanor…