Gabriel Albert Autes

Cette personne n’est plus à l’EPFL

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Publications associées (28)

Electronic Transport in Graphene with Aggregated Hydrogen Adatoms

Oleg Yazyev, Fernando Gargiulo, Gabriel Albert Autes, Naunidh Singh Virk

Hydrogen adatoms and other species covalently bound to graphene act as resonant scattering centers affecting the electronic transport properties and inducing Anderson localization. We show that attractive interactions between adatoms on graphene and their ...

American Physical Society2014

Strong out-of-plane magnetic anisotropy of Fe adatoms on Bi2Te3

Oleg Yazyev, Gabriel Albert Autes, Artem Pulkin

The electronic and magnetic properties of individual Fe atoms adsorbed on the surface of the topological insulator Bi2Te3(111) are investigated. Scanning tunneling microscopy and spectroscopy prove the existence of two distinct types of Fe species, while o ...

American Physical Society2014

Engineering quantum spin Hall effect in graphene nanoribbons via edge functionalization

Oleg Yazyev, Gabriel Albert Autes

Kane and Mele predicted that in the presence of spin-orbit interaction graphene realizes the quantum spin Hall state [Phys. Rev. Lett. 95, 226801 (2005)]. However, exceptionally weak intrinsic spin-orbit splitting in graphene (approximate to 10(-5) eV) inh ...

Amer Physical Soc2013

Magnetic Moment and Anisotropy of Individual Co Atoms on Graphene

Harald Brune, Pietro Gambardella, François Patthey, Oleg Yazyev, Quentin Dubout, Fabio Donati, Gabriel Albert Autes

We report on the magnetic properties of single Co atoms on graphene on Pt(111). By means of scanning tunneling microscopy spin-excitation spectroscopy, we infer a magnetic anisotropy of K = -8.1 meV with out-of-plane hard axis and a magnetic moment of 2.2 ...

American Physical Society2013

Controlling edge states in the Kane-Mele model via edge chirality

Oleg Yazyev, Gabriel Albert Autes

We investigate the dependence of band dispersion of the quantum spin Hall effect (QSHE) edge states in the Kane-Mele model on crystallographic orientation of the edges. Band structures of the one-dimensional honeycomb lattice ribbons show the presence of t ...

Wiley-V C H Verlag Gmbh2013

Structural and electronic properties of the Bi/Au(110)-1x4 surface

Harald Brune, Marco Grioni, François Patthey, Oleg Yazyev, Marina Pivetta, Alberto Crepaldi, Gabriel Albert Autes, Cédric Tournier-Colletta

We report on the structural and electronic properties of the Bi/Au(110)-1 x 4 surface, by combining scanning tunneling microscopy, angle-resolved photoemission spectroscopy, and first-principles calculations. The analysis of the precursor 1 x 8 moire struc ...

American Physical Society2013

Electronic Instability in a Zero-Gap Semiconductor: The Charge-DensityWave in (TaSe4)(2)I

Helmuth Berger, Marco Grioni, Oleg Yazyev, Luca Moreschini, Alberto Crepaldi, Simon Karl Moser, Gabriel Albert Autes, Cédric Tournier-Colletta

We report a comprehensive study of the paradigmatic quasi-1D compound (TaSe4)(2)I performed by means of angle-resolved photoemission spectroscopy (ARPES) and first-principles electronic structure calculations. We find it to be a zero-gap semiconductor in t ...

American Physical Society2013

Giant Ambipolar Rashba Effect in the Semiconductor BiTeI

Helmuth Berger, Philippe Bugnon, Klaus Kern, Marco Grioni, Oleg Yazyev, Luca Moreschini, Alberto Crepaldi, Simon Karl Moser, Gabriel Albert Autes, Naunidh Singh Virk, Cédric Tournier-Colletta

We observe a giant spin-orbit splitting in the bulk and surface states of the noncentrosymmetric semiconductor BiTeI. We show that the Fermi level can be placed in the valence or in the conduction band by controlling the surface termination. In both cases, ...

Amer Physical Soc2012

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