Eleonora Russo

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Related publications (28)

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Three-dimensional nanoscale study of Al segregation and quantum dot formation in GaAs/AlGaAs core-shell nanowires

Anna Fontcuberta i Morral, Martin Heiss, Eleonora Russo, Luca Francaviglia, Sonia Conesa Boj, Yannik Fontana

GaAs/Al-GaAs core-shell nanowires fabricated by molecular beam epitaxy contain quantum confining structures susceptible of producing narrow photoluminescence (PL) and single photons. The nanoscale chemical mapping of these structures is analyzed in 3D by a ...

American Institute of Physics2014

Suppression of three dimensional twinning for a 100% yield of vertical GaAs nanowires on silicon

Anna Fontcuberta i Morral, Eleonora Russo, Martin Heiss, Emanuele Uccelli, Lionel Michelet

Multiple seed formation by three-dimensional twinning at the initial stages of growth explains the manifold of orientations found when self-catalyzed GaAs nanowires grow on silicon. This mechanism can be tuned as a function of the growth conditions by chan ...

2012

Vertical "III-V" V-Shaped Nanomembranes Epitaxially Grown on a Patterned Si[001] Substrate and Their Enhanced Light Scattering

Anna Fontcuberta i Morral, Martin Heiss, Sonia Conesa Boj, Anna Dalmau Mallorquí, Eleonora Russo

We report on a new form of III-IV compound semiconductor nanostructures growing epitaxially as vertical V-shaped nanomembranes on Si(001) and study their light-scattering properties. Precise position control of the InAs nanostructures in regular arrays is ...

American Chemical Society2012

Quantum Dot Opto-Mechanics in a Fully Self-Assembled Nanowire

Anna Fontcuberta i Morral, Eleonora Russo, Martin Heiss, Yannik Fontana

We show that optically active quantum dots (QDs) embedded in MBE-grown GaAs/AlGaAs core-shell nanowires (NWs) are coupled to the NW mechanical motion. Oscillations of the NW modulate the QD emission energy in a broad range exceeding 14 meV. Furthermore, th ...

American Chemical Society2014

Enhanced second harmonic generation from InAs nano-wing structures on silicon

Anna Fontcuberta i Morral, Eleonora Russo, Anna Dalmau Mallorquí

We demonstrate morphology-dependent second-harmonic generation (SHG) from InAs V-shaped nanomembranes. We show SHG correlation with the nano-wing shape and size, experimentally quantify the SHG efficiency, and demonstrate a maximum SHG enhancement of about ...

Royal Society of Chemistry2013

Exciton footprint of self-assembled AlGaAs quantum dots in core-shell nanowires

Anna Fontcuberta i Morral, Eleonora Russo, Pierre Michel Corfdir, Martin Heiss, Yannik Fontana, Samuel Sonderegger

Quantum-dot-in-nanowire systems constitute building blocks for advanced photonics and sensing applications. The electronic symmetry of the emitters impacts their function capabilities. Here we study the fine structure of gallium-rich quantum dots nested in ...

American Physical Society2014

Magnetic states of an individual Ni nanotube probed by anisotropic magnetoresistance

Anna Fontcuberta i Morral, Dirk Grundler, Martin Heiss, Eleonora Russo, Daniel Rüffer

Defined magnetization states in magnetic nanotubes could be the basic building blocks for future memory elements. To date, it has been extremely challenging to measure the magnetic states at the single-nanotube level. We investigate the magnetization state ...

Royal Soc Chemistry2012

Segregation scheme of indium in AlGaInAs nanowire shells

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Martin George Friedl, Eleonora Russo, Heidi Andrea Potts, Luca Francaviglia, Simon Robert Escobar Steinvall

2019