Investigation de la supraconductiviténon conventionelle et impact de la pression sur des cuprates de haute entropie // Investigating Unconventional Superconductivity and the Influence of High Pressure in High Entropy Cuprate Oxides

Dans le cas de l'appel UBGrad, seuls les candidats 'internationaux' sont éligibles. Voir description ci-dessous.
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High transition temperature (High-TC) superconductivity is the subject of extensive research due to its
potential applications in highly efficient energy transmission, quantum computing, and levitation technology.
This project utilizes the novel high entropy approach in cuprate superconductors to achieve High-TC
superconductivity. In recent years, the novel high-entropy approach has emerged as a promising strategy to enhance material properties by increasing configurational entropy, which can stabilize novel phases and improve superconducting characteristics (for instance, superconducting transition temperature and critical fields). However, the majority of high-entropy materials studied so far exhibit a superconducting transition temperature below 15 K. Herein, we aim to synthesize and characterize novel High-TC high entropy superconductors (Cuprate-based), exploring new compositions and crystal structures, such as 123 and 1212- type cuprate materials. A crucial component of this study is to systematically examine the effects of high pressure on the superconducting properties of these materials. Additionally, we will explore the robustness of superconductivity in high entropy cuprate oxides under extreme pressures. This project also pioneers the detailed analysis of the microstructure of these high entropy superconductors, examining the relationship between microstructural features and superconducting properties. By understanding this interplay, we aim to optimize these materials for practical applications, developing new superconducting materials that can operate at higher temperatures and even under extreme conditions.
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Début de la thèse : 01/09/2025

Appel à projets - UB PhD Scholarships

Université de Bordeaux

40 Sciences Chimiques

Uniquement les candidats 'internationaux' sont éligibles. Voir description ci-dessous. Sont éligibles uniquement des candidatures internationales, à savoir : - des candidates ou candidats ayant obtenu (ou en cours d'obtention de) leur diplôme d'accès au doctorat (Master ou équivalent) dans un établissement à l'étranger - des candidates ou candidats actuellement dans un Graduate Program de l'université de Bordeaux, inscrits en deuxième année de Master et ayant obtenu leur diplôme d'accès au Master dans un établissement à l'étranger Seront prises en compte uniquement les candidatures soumises sur la plateforme suivante : https://aap.u-bordeaux.fr/ et avant le 17 mars à 23h59 (GMT Paris). Un guide de candidature ainsi que la liste des documents à soumettre sont disponibles sur la plateforme. Pour toute question, veuillez contacter : internationalisation.doctorat@u-bordeaux.fr
PhD Student Expectations: • Literature review about high entropy oxides and the available synthesis processes • Stabilization of targeted compositions using Solid State Chemistry root • Structural characterization ( X-Ray diffraction ; Le Bail and Rietveld refinement) • Stabilization of dense pellet using Ceramic engineering • Physical and/or chemical characterizations • Proficiency in English with excellent written and verbal communication skills is required. The candidate should be able to articulate ideas clearly, draft the results for publications, and engage effectively in discussions. • Actively pursuing a master's (and/or engineering student) in Solid State Chemistry, Materials Chemistry, and/or Physics. Selection will be based on merit and potential, measured in academic records and personal achievements before a common interview. Motivation, proactivity, and capacity for teamwork will also be considered. The UB PhD scholarship program is open to international candidates only, which means: - candidates holding (or currently enrolled in) a national level master's degree or another degree conferring master's status from a foreign institution - candidates currently in a Graduate Program, enrolled in second year of Master at the University of Bordeaux, and holding a degree from a foreign institution We will only consider applications submitted on the following platform: https://aap.u-bordeaux.fr/ and prior March 17, at 11:59pm (GMT Paris). A guide on how to apply as well as the list of documents to submit are available on the platform. For any question, please contact: internationalisation.doctorat@u-bordeaux.fr