949 citations · 12.7k across the 161 of their papers we have counts for
29 papers · 1 filter
Spin-momentum locking and ultrafast spin-charge conversion in ultrathin epitaxial BiSb topological insulator
E. Rongione, L. Baringthon, D. She +13
The helicity of 3D topological insulator surface states has drawn significant attention in spintronics owing to spin-momentum locking where the carriers' spin is oriented perpendic…
Quantitative Assessment of Carrier Density by Cathodoluminescence. I. GaAs thin films and modeling
Hung-Ling Chen, Andrea Scaccabarozzi, Romaric De Lépinau +5
Doping is a fundamental property of semiconductors and constitutes the basis of modern microelectronic and optoelectronic devices. Their miniaturization requires contactless charac…
Common universal behaviors of magnetic domain walls driven by spin-polarized electrical current and magnetic field
R. Diaz Pardo, N. Moisan, L. Albornoz +3
We explore universal behaviors of magnetic domain wall driven by the spin-transfer of an electrical current, in a ferromagnetic (Ga,Mn)(As,P) thin film with perpendicular magnetic…
ARPES and transport studies of the elemental topological insulator -Sn
Quentin Barbedienne, Julien Varignon, Nicolas Reyren +11
Gray tin, also known as -Sn, can be turned into a three-dimensional topological insulator (3D-TI) by strain and finite size effects. Such room temperature 3D-TI is peculiarly in…
Resonant magneto-acoustic switching: influence of Rayleigh wave frequency and wavevector
Piotr Kuszewski, Ibrahima S. Camara, Nicolas Biarrotte +6
We show on in-plane magnetized thin films that magnetization can be switched efficiently by 180 degrees using large amplitude Rayleigh waves travelling along the hard or easy magne…
Strong reduction of the coercivity by a surface acoustic wave in an out-of-plane magnetized epilayer
Laura Thevenard, Ibrahima Sock Camara, Jean-Yves Prieur +4
Inverse magnetostriction is the effect by which magnetization can be changed upon application of stress/strain. A strain modulation may be created electrically by exciting interdig…
Direct measurement of coherent subterahertz acoustic phonons mean free path in GaAs
Romain Legrand, Agnès Huynh, Bernard Jusserand +2
Phonon mean free path is generally inferred from the measurement of thermal conductivity and we are still lacking precise information on this quantity. Recent advances in the field…
Current Induced Fingering Instability in Magnetic Domain Walls
Jon Gorchon, Javier Curiale, Andrejs Cebers +4
The shape instability of magnetic domain walls under current is investigated in a ferromagnetic (Ga,Mn)(As,P) film with perpendicular anisotropy. Domain wall motion is driven by th…
Irreversible magnetization switching using surface acoustic waves
Laura Thevenard, Catherine Gourdon, Jean-Yves Duquesne +5
An analytical and numerical approach is developped to pinpoint the optimal experimental conditions to irreversibly switch magnetization using surface acoustic waves (SAWs). The lay…
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…
Field-induced domain wall propagation: beyond the one-dimensional model
L. Thevenard, C. Gourdon, S. Haghgoo +5
We have investigated numerically the field-driven propagation of perpendicularly magnetized ferromagnetic layers. It was then compared to the historical one-dimensional domain wall…
Exchange constant and domain wall width in (Ga,Mn)(As,P) films with self-organization of magnetic domains
Sanaz Haghgoo, Murat Cubukcu, Hans Jürgen Von Bardeleben +3
The incorporation of Phosphorus into (Ga,Mn)As epilayers allows for the tuning of the magnetic easy axis from in-plane to perpendicular-to-plane without the need for a (Ga,In)As te…
Magnetic anisotropy of singly Mn-doped InAs/GaAs quantum dots
Olivier Krebs, Emile Benjamin, Aristide Lemaître
We report on the micro-photoluminescence spectroscopy of InAs/GaAs quantum dots (QD) doped by a single Mn atom in a magnetic field either longitudinal or perpendicular to the optic…
Hyperfine interaction in InAs/GaAs self-assembled quantum dots : dynamical nuclear polarization versus spin relaxation
O. Krebs, B. Eble, A. Lemaître +4
We report on the influence of hyperfine interaction on the optical orientation of singly charged excitons X+ and X- in self-assembled InAs/GaAs quantum dots. All measurements were…
Field-Driven Domain-Wall Dynamics in GaMnAs Films with Perpendicular Anisotropy
Alexandre Dourlat, Vincent Jeudy, Aristide Lemaître +1
We combine magneto-optical imaging and a magnetic field pulse technique to study domain wall dynamics in a ferromagnetic (Ga,Mn)As layer with perpendicular easy axis. Contrary to u…
Strain-Control of the magnetic anisotropy in (Ga,Mn)(As,P) ferromagnetic semiconductor layers
Aristide Lemaître, Audrey Miard, Laurent Travers +6
A small fraction of phosphorus (up to 10 %) was incorporated in ferromagnetic (Ga,Mn)As epilayers grown on a GaAs substrate. P incorporation allows reducing the epitaxial strain or…
Controlled light-matter coupling for a single quantum dot embedded in a pillar microcavity using far-field optical lithography
A. Dousse, L. Lanco, J. Suffczynski +7
Using far field optical lithography, a single quantum dot is positioned within a pillar microcavity with a 50 nm accuracy. The lithography is performed in-situ at 10 K while measur…
Microcavity polariton light emitting diode
Daniele Bajoni, Elizaveta Semenova, Aristide Lemaître +4
Cavity polaritons have been shown these last years to exhibit a rich variety of non-linear behaviors which could be used in new polariton based devices. Operation in the strong cou…
Optically probing the fine structure of a single Mn atom in an InAs quantum dot
A. Kudelski, A. Lemaître, A. Miard +4
We report on the optical spectroscopy of a single InAs/GaAs quantum dot (QD) doped with a single Mn atom in a longitudinal magnetic field of a few Tesla. Our findings show that the…
Determination of the micromagnetic parameters in (Ga,Mn)As using domain theory
Catherine Gourdon, Alexandre Dourlat, Vincent Jeudy +4
The magnetic domain structure and magnetic properties of a ferromagnetic (Ga,Mn)As epilayer with perpendicular magnetic easy-axis are investigated. We show that, despite strong hys…
Polariton laser using single micropillar GaAs-GaAlAs semiconductor cavities
Daniele Bajoni, Pascale Senellart, Esther Wertz +4
Polariton lasing is demonstrated on the zero dimensional states of single GaAs/GaAlAs micropillar cavities. Under non resonant excitation, the measured polariton ground state occup…
Photon lasing in a GaAs microcavity: similarities with a polariton condensate
Daniele Bajoni, Pascale Senellart, Aristide Lemaître +1
We study experimentally the lasing regime of a GaAs based microcavity sample under strong optical pumping. The very same sample exhibits the strong coupling regime at low excitatio…
Magnetic patterning of (Ga,Mn)As by hydrogen passivation
Laura Thevenard, Audrey Miard, Laurent Vila +5
We present an original method to magnetically pattern thin layers of (Ga,Mn)As. It relies on local hydrogen passivation to significantly lower the hole density, and thereby locally…
Spin-Polarized Tunneling as a probe of (Ga,Mn)As electronic properties
M. Elsen, H. Jaffres, R. Mattana +3
We present magnetic and tunnel transport properties of (Ga,Mn)As/(In,Ga)As/(Ga,Mn)As structure before and after adequate annealing procedure. The conjugate increase of magnetizatio…