6.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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34 papers · 2 filters
Electric-field control of the magnetic anisotropy in an ultrathin (Ga,Mn)As/(Ga,Mn)(As,P) bilayer
Tarik Niazi, Mathieu Cormier, Damien Lucot +4
We report on the electric control of the magnetic anisotropy in an ultrathin ferromagnetic (Ga,Mn)As/(Ga,Mn)(As,P) bilayer with competing in-plane and out-of-plane anisotropies. Th…
Phononic filter effect of rattling phonons in the thermoelectric clathrate BaGeNi
Holger Euchner, Stephane Pailhès, Lien Nguyen +6
One of the key requirements for good thermoelectric materials is a low lattice thermal conductivity. Here we present a combined neutron scattering and theoretical investigation of…
Magnetic Insulator-Induced Proximity Effects in Graphene: Spin Filtering and Exchange Splitting Gaps
H. -X. Yang, A. Hallal, D. Terrade +3
We report on first-principles calculations of spin-dependent properties in graphene induced by its interaction with a nearby magnetic insulator (Europium oxide, EuO). The magnetic…
Mn Solid Solutions in Self-Assembled Ge/Si (001) Quantum Dot Heterostructures
Joseph Kassim, Christopher Nolph, Matthieu Jamet +2
Heteroepitaxial Ge0.98Mn0.02 quantum dots on Si (001) were grown by molecular beam epitaxy. The standard Ge wetting layer-hut-dome-superdome sequence was observed, with no indicato…
Non-collinear magnetic ordering in compressed FePd ordered alloy: a first principles study
Y. O. Kvashnin, S. Khmelevskyi, J. Kudrnovský +3
By means of ab initio calculations based on the density functional theory we investigated magnetic phase diagram of ordered FePd alloy as a function of external pressure. Consi…
X-ray magnetic circular dichroism in (Ge,Mn) compounds: experiments and modeling
Samuel Tardif, Andrey Titov, Emmanuel Arras +10
X-ray absorption (XAS) and x-ray magnetic circular dichroism (XMCD) spectra at the L edges of Mn in (Ge,Mn) compounds have been measured and are compared to the results of…
Electronic transport and quantum localization effects in organic semiconductors
S. Ciuchi, S. Fratini
We explore the charge transport mechanism in organic semiconductors based on a model that accounts for the thermal intermolecular disorder at work in pure crystalline compounds, as…
Pd magnetism induced by indirect interlayer exchange coupling
W. E. Bailey, A. Ghosh, S. Auffret +4
We show that very large paramagnetic moments are created in ultrathin Pd layers through indirect interlayer exchange coupling. Pd -edge x-ray magnetic circular dichroism measure…
Many-body Green's function study of coumarins for dye-sensitized solar cells
C. Faber, I. Duchemin, T. Deutsch +1
We study within the many-body Green's function and Bethe-Salpeter formalisms the excitation energies of several coumarin dyes proposed as an efficient alternative to ruthenium…
Speeding up the solution of the Bethe-Salpeter equation by a double-grid method and Wannier interpolation
David Kammerlander, Silvana Botti, Miguel A. L. Marques +2
The Bethe-Salpeter equation is a widely used approach to describe optical excitations in bulk semiconductors. It leads to spectra that are in very good agreement with experiment, b…
The Effects of Post-Thermal Annealing on the Emission Spectra of GaAs/AlGaAs Quantum Dots grown by Droplet Epitaxy
Pilkyung Moon, J. D. Lee, S. K. Ha +5
We fabricated GaAs/AlGaAs quantum dots by droplet epitaxy method, and obtained the geometries of the dots from scanning transmission electron microscopy data. Post-thermal annealin…
Monolithic growth of ultra-thin Ge nanowires on Si(001)
Jianjun Zhang, Georgios Katsaros, Francesco Montalenti +8
Self-assembled Ge wires with a height of only 3 unit cells and a length of up to 2 micrometers were grown on Si(001) by means of a catalyst-free method based on molecular beam epit…
Determination of the valence band offset at cubic CdSe/ZnTe type II heterojunctions: A combined experimental and theoretical approach
Daniel Mourad, Jan-Peter Richters, Lionel Gérard +3
We present a combined experimental and theoretical approach for the determination of the low-temperature valence band offset (VBO) at CdSe/ZnTe heterojunctions with underlying zinc…
Polarity determination in ZnSe nanowires by HAADF STEM
Martien Den Hertog, Miryam Elouneg-Jamroz, Edith Bellet-Amalric +7
High angle annular dark field scanning transmission electron microscopy is used to analyze the polarity of ZnSe nanowires grown, by molecular beam epitaxy, on GaAs substrates. The…
Current induced domain wall dynamics in the presence of a transverse magnetic field in out-of-plane magnetized materials
O. Boulle, L. D. Buda-Prejbeanu, M. Miron +1
An analytical model was developped to describe the current induced DW dynamics of a Bloch DW in the presence of an external transverse magnetic field. The model takes into account…
Efficient and accurate solver of the three-dimensional screened and unscreened Poisson's equation with generic boundary conditions
Alessandro Cerioni, Luigi Genovese, Alessandro Mirone +1
We present an explicit solver of the three-dimensional screened and unscreened Poisson's equation which combines accuracy, computational efficiency and versatility. The solver, bas…
Tunable magnetic states in h-BN sheets
Eduardo Machado-Charry, Paul Boulanger, Luigi Genovese +2
Magnetism in 2D atomic sheets has attracted considerable interest as its existence could allow the development of electronic and spintronic devices. The existence of magnetism is n…
Direct Observation of Massless Domain Wall Dynamics in Nanostripes with Perpendicular Magnetic Anisotropy
Jan Vogel, Marlio Bonfim, Nicolas Rougemaille +8
Domain wall motion induced by nanosecond current pulses in nanostripes with perpendicular magnetic anisotropy (Pt/Co/AlO) is shown to exhibit negligible inertia. Time-resolved…
Local deformations and incommensurability of high quality epitaxial graphene on a weakly interacting transition metal
Nils Blanc, Johann Coraux, Chi Vo-Van +3
We investigate the fine structure of graphene on iridium, which is a model for graphene weakly interacting with a transition metal substrate. Even the highest quality epitaxial gra…
Anisotropic magnetothermoelectric power of ferromagnetic thin films
M. S. Anwar, B. Lacoste, J. Aarts
We compare the behavior of the magnetothermoelectric power (MTEP)in metallic ferromagnetic thin films of Ni80Fe20 (Permalloy; Py), Co and CrO2 at temperatures in the range of 100 K…
Phonons and Colossal Thermal Expansion Behavior of Ag3Co(CN)6 and Ag3Fe(CN)6
R Mittal, M. Zbiri, H. Schober +3
Recently colossal positive volume thermal expansion has been found in the framework compounds Ag3Co(CN)6 and Ag3Fe(CN)6. Phonon spectra have been measured using the inelastic neutr…
Strain relaxation by dislocation glide in ZnO/ZnMgO core-shell nanowires
Guillaume Perillat-Merceroz, Robin Thierry, Pierre-Henri Jouneau +2
Plastic relaxation of the misfit stress in core-shell semi-conducting nanowires can lead to structural defects, detrimental to applications. Core-shell Zn{0.7}Mg{0.3}O/ZnO quantum…
Damage-cluster distributions and size effect on strength in compressive failure
Lucas Girard, Jerome Weiss, David Amitrano
We investigate compressive failure of heterogeneous materials on the basis of a continuous progressive damage model. The model explicitely accounts for tensile and shear local dama…
Structural recovery of ion implanted ZnO nanowires
Guillaume Perillat-Merceroz, Fabrice Donatini, Robin Thierry +3
Ion implantation is an interesting method to dope semiconducting materials such as zinc oxide provided that the implantation-induced defects can be subsequently removed. Nitrogen i…