Job title:
Shared Postdoc position at LPEM-ESPCI PSL University and INSP-Sorbonne University
Company:
Job description
Offer DescriptionSince the discovery of superconductivity in truly 2D dimensional materials, namely a single atomic layer of Pb on Si(111) surface [1], there has been an increased interest in the exploration of two dimensional superconductors. In fact, two dimensional states, which reside often at surfaces or interfaces, can provide an interesting playground to expand the knowledge on superconductivity. In particular, the presence of a surface or an interface provides the breaking of the out-of-plane inversion symmetry. This symmetry breaking, if accompanied by a strong spin-orbit coupling, can lead to the lifting of the spin degeneracy and to spin-momentum locking via the Rashba effect [2]. A strong spin- orbit interaction has some fundamental consequences on the superconducting wave-function. Instead of a pure singlet s-wave wave function the Cooper pairs acquire a mixture of singlet and triplet components [3] and the spin-momentum locking can help the superconducting state to persist in the presence of an exchange magnetic field, and so in direct contact to a ferromagnet, which normally tend to destroy superconductivity [4]. The combination of superconductivity, spin-orbit coupling and ferromagnetism is predicted to be among the best way for engineering topological superconductivity [5,6]. This is a fascinating new quantum mechanical phase with a strong interest from both the point of views of fundamental research and applications since it is considered a promising platform for quantum computing due to a strongly reduced decoherence effect thanks to a topological protection.In this fascinating research field, the postdoctoral position focuses on the study of two class of materials where 2D superconductivity encounters strong spin-orbit interaction: i) single atomic layers, made of heavy metallic elements, on semiconductors where superconductivity is induced by proximity effect and ii) 2D electron gasses at the surface of KTaO3.We are looking for a highly motivated postdoc with a PhD degree in condensed matter physics. The position requires good autonomy, a strong knowledge of ultra-high vacuum environment, sample preparation by molecular beam epitaxy and ARPES and/or Low temperature STM. The position is founded for 1+1 years by two different founding agencies: “Institut de Materiaux de Sorbonne Universite’” and “Agence nationale de la recherche’”. The foreseen starting date is May 2024. Gross salary 2650€-3200€ depending on experience.[1] Zhang et al., Nature Physics 6, 104 (2010).
[2] Edelstein V M, Phys. Rev. B 67, 020505 (2003).
[3] Somnath Bhattacharyya et al., New J. Phys. 22, 093039 (2020). [4] Tinkham, M. Introduction to Superconductivity (Dover, 2004). [5] Liu X et al., Phys. Rev. B 92, 014513 (2015).
[6] Yoshizawa. et al., Nat Commun 12, 1462 (2021).RequirementsResearch Field Physics » Solid state physics Education Level PhD or equivalentSkills/QualificationsWe are looking for a highly motivated postdoc with a PhD degree in condensed matter physics. The position requires good autonomy, a strong knowledge of ultra-high vacuum environment, sample preparation by molecular beam epitaxy and ARPES and/or Low temperature STM.Research Field Physics » Solid state physicsAdditional InformationWork Location(s)Number of offers available 1 Company/Institute ESPCI PSL University Country France City Paris GeofieldWhere to apply E-mail[email protected]Contact CityParis WebsiteStreet10 rue Vauquelin Postal Code75005STATUS: EXPIRED
Expected salary
€2650 – 3200 per month
Location
Paris
Job date
Wed, 06 Mar 2024 05:11:05 GMT
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