Buscar
Mostrando ítems 1-10 de 262
Fano fingerprints of Majoranas in Kitaev dimers of superconducting adatoms
(Elsevier B.V., 2016-09-01)
We investigate theoretically a Fano interferometer composed by STM and AFM tips close to a Kitaev dimer of superconducting adatoms, in which the adatom placed under the AFM tip, encloses a pair of Majorana fermions (MFs). ...
Diffusion of fluorine adatoms on doped graphene
(American Institute of Physics, 2014-09)
We calculate the diffusion barrier of fluorine adatoms on doped graphene in the diluted limit using Density Functional Theory. We found that the barrier D strongly depends on the magnitude and character of the graphene’s ...
Scanning tunneling microscope operating as a spin diode
(Amer Physical Soc, 2011-09-19)
We theoretically investigate spin-polarized transport in a system composed of a ferromagnetic scanning-tunneling-microscope (STM) tip coupled to an adsorbed atom (adatom) on a host surface. Electrons can tunnel directly ...
Spin-resolved local density of states for an Anderson adatom in a ferromagnetic island
(2013-06-01)
In this work, we investigate theoretically the spin-resolved local density of states (SR-LDOS) of a ferromagnetic (FM) island hybridized with an adatom, which is described by the Single Impurity Anderson Model (SIAM). Our ...
Spin-resolved local density of states for an Anderson adatom in a ferromagnetic island
(2013-06-01)
In this work, we investigate theoretically the spin-resolved local density of states (SR-LDOS) of a ferromagnetic (FM) island hybridized with an adatom, which is described by the Single Impurity Anderson Model (SIAM). Our ...
S-type single alkali-adatom on graphene
(Elsevier Science, 2018-09)
We present a theoretical study of the localized aspects of the alkali-metal atoms (Li, Na, K) interacting with graphene. We use an ab-initio calculation of the Hamiltonian parameters where the chemical properties of the ...
Electron confinement induced by diluted hydrogen-like ad-atoms in graphene ribbons
(2015)
We report the electronic properties of two-dimensional systems made of graphene nanoribbons, which are patterned with ad-atoms in two separated regions. Due to the extra electronic confinement induced by the presence of ...
Electrocatalytic effect of Pb and Sn adatoms on the oxidation of 1-propanol on platinized platinum electrodes: Determination of the apparent activation energy
(R Oldenbourg Verlag, 2003-01-01)
The electrocatalytic oxidation of 1-propanol was investigated on platinum electrodes modified by submonolayers of Pb and Sn in acid media. An increase of oxidation rates observed for both Pb and Sn, and the influence of ...