Post-Doctoral Position H/F
Le CEA est un acteur majeur de la recherche, au service des citoyens, de l'économie et de l'Etat.Il apporte des solutions concrètes à leurs besoins dans quatre domaines principaux : transition énergétique, transition numérique, technologies pour la médecine du futur, défense et sécurité sur un socle de recherche fondamentale.
Le CEA s'engage depuis plus de 75 ans au service de la souveraineté scientifique, technologique et industrielle de la France et de l'Europe pour un présent et un avenir mieux maîtrisés et plus sûrs.
Implanté au coeur des territoires équipés de très grandes infrastructures de recherche, le CEA d'un large éventail de partenaires académiques et industriels en France, en Europe et à l'international.
Les 20 000 collaboratrices et collaborateurs du CEA partagent trois valeurs fondamentales : - La conscience des responsabilités- La coopération- La curiositéDevices realized with ferroelectric hafnium oxide are silicon compatible, power-efficient, and can BE cost-effectively integrated into advanced technology nodes for sensor, nonvolatile memory, logic, and neuromorphic applications.
Currently, hafnium-zirconium mixed oxide (HfxZr1-xO2) offers the widest stoichiometry window for fabricating ultrathin ferroelectric films with large remanent polarization.
Still, the film requires oxygen vacancies to stabilize the ferroelectric phase and has reliability issues. An alternative could BE to start from stoichiometric, quasi-vacancy-free hafnia and use suitable dopants to optimize the ferroelectric properties.
We will explore the influence of the dopant modulated atomic and electronic structure on the ferroelectric properties. The chosen materials will BE optimized by successive simulation, processing, and characterization iterations and integrated into scaled arrays to provide statistically significant results on ferroelectric capacitor performance.
The work will BE done by employing a range of static and operando experiments on bare films and electrode / film interfaces (HAXPES, XPS, PFM, PEEM, XRD) in both laboratory and synchrotron environments.
Operando experiments will correlate device endurance with material physical properties and electrical characterization will BE carried out.
The post-doctoral research will give a better understanding of the influence of dopants on local chemistry, electronic structure, phase composition, and their effects on material and ferroelectric parameters, including recrystallization temperature and remanent polarization.
The work will BE done by employing a range of static and operando experiments on bare films and electrode / film interfaces (HAXPES, XPS, PFM, PEEM, XRD) in both laboratory and synchrotron environments.
Operando experiments will correlate device endurance with material physical properties and electrical characterization will BE carried out.
The results will BE compared with ab initio calculations and will provide input for physical models based on real devices to predict key metrics such as wake-up, endurance, retention, leakage, and breakdown using vacancy-free doped hafnia.
The D3PO project is a Franco-German collaboration between the CEA, NaMLAb (Dresden) and the Technische Hochschule München, jointly funded by the ANR and the DFG.
Candidates should have a PhD in physics with good background in oxide materials, ferroelectrics or photoemission spectroscopy.
The initial contract is for 12 months, renewable 12 months.CV and contact details for two references before 8th September 2023 to : BARRETT Nick (@. )
Post-Doctoral Position H/F
Operando experiments will correlate device endurance with material physical properties and electrical characterization will BE carried out. The post doctoral research will give a better..
H/F Post-Doctoral Position
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