| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Amati, Matteo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023In situ study of electrochemical activation and surface segregation of the SOFC electrode material La0.75Sr0.25r0.5 Mn0.5O3±delta
- 2023Spatially‐Modulated Silicon Interface Energetics Via Hydrogen Plasma‐Assisted Atomic Layer Deposition of Ultrathin Aluminacitations
- 2022Synthesis and characterization of MWCNT-COOH/Fe3O4 and CNT-COOH/Fe3O4/NiO nanocomposites: assessment of adsorption and photocatalytic performancecitations
- 2020Atomic and electronic structure of a multidomain GeTe crystalcitations
- 2018Depth-Dependent Scanning Photoelectron Microspectroscopy Unravels the Mechanism of Dynamic Pattern Formation in Alloy Electrodepositioncitations
- 2017An in situ near-ambient pressure X-ray photoelectron spectroscopy study of CO2 reduction at Cu in a SOE cellcitations
- 2017Low temperature growth of fully covered single-layer graphene using a CoCu catalystcitations
- 2017Low temperature growth of fully covered single-layer graphene using a CoCu catalyst.
- 2017An in situ near-ambient pressure X-ray photoelectron spectroscopy study of CO 2 reduction at Cu in a SOE cellcitations
- 2016Fabrication of Ti substrate grain dependent C/TiO2 composites through carbothermal treatment of anodic TiO2citations
- 2015Tuning electronic properties of carbon nanotubes by nitrogen grafting: Chemistry and chemical stabilitycitations
- 2013Tubular Sn-filled carbon nanostructures on ITO: Nanocomposite material for multiple applicationscitations
- 2013Tubular Sn-filled carbon nanostructures on ITO: Nanocomposite material for multiple applicationscitations
Places of action
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article
Atomic and electronic structure of a multidomain GeTe crystal
Abstract
Renewed interest in the ferroelectric semi-conductor germanium telluride was recently triggered by the direct observation of a giant Rashba effect and a 30-year-old dream about a functional spin field-effect transistor. In this respect, all-electrical control of the spin texture in this material in combination with ferroelectric properties at the nanoscale would create advanced functionalities in spintronics and data information processing. Here, we investigate the atomic and electronic properties of GeTe bulk single crystals and their (111) surfaces. We succeeded in growing crystals possessing solely inversion domains of similar to 10 nm thickness parallel to each other. Using HAADF-TEM we observe two types of domain boundaries, one of them being similar in structure to the van der Waals gap in layered materials. This structure is responsible for the formation of surface domains with preferential Te-termination (similar to 68%) as we determined using photoelectron diffraction and XPS. The lateral dimensions of the surface domains are in the range of similar to 10-100 nm, and both Ge- and Te-terminations reveal no reconstruction. Using spin-ARPES we establish an intrinsic quantitative relationship between the spin polarization of pure bulk states and the relative contribution of different terminations, a result that is consistent with a reversal of the spin texture of the bulk Rashba bands for opposite configurations of the ferroelectric polarization within individual nanodomains. Our findings are important for potential applications of ferroelectric Rashba semiconductors in nonvolatile spintronic devices with advanced memory and computing capabilities at the nanoscale.