Functional Oxides Research Group (COE), IIT Madras is pleased to announce the 1st lecture in our Seminar Series, to be delivered by Prof. Manuel Bibes, Université Paris-Saclay, France
A new research direction in spintronics called spin-orbitronics relies on harnessing the spin-orbit coupling to generate spin currents from charge currents and vice versa in non-magnetic materials (spin-charge interconversion). Besides heavy metals such as Pt or Ta that exhibit the direct and inverse spin Hall effects, oxides have emerged as efficient spin-charge interconversion materials. In particular in oxide-based two-dimensional electron gases (2DEGs) displaying Rashba-type spin-orbit coupling, another mechanism – the Edelstein effect – allows for spin-charge interconversion with greater efficiency. In this talk, I will explain the physics of spin-charge interconversion and illustrate it with results obtained on SrTiO3-based 2DEGs. I will then present some recent data on another family of 2DEGs based on KTaO3 and on PdCoO2 ultrathin films, that possess a strong Rashba splitting coexisting with surface ferromagnetism.
Prof Manuel Bibes received his Ph.D. in 2001 jointly from the Universitat Autònoma de Barcelona and the INSA Toulouse. After that, he worked as a post-doc researcher on magnetic tunnel junctions in Albert Fert’s group at CNRS/Thales. In 2003 he became a CNRS Scientist and joined the Institute of Fundamental Electronics (now the C2N) at the University Paris-Sud in Orsay. Prof. Manuel Bibes is currently the CNRS Research Director. He is the recipient of the EU40 prize of the European Materials Research Society (2013), a fellow of the APS and the laureate of an ERC Consolidator Grant “MINT” (2014). In 2017, he received the Descartes-Huygens award of the French Academy of Science and the Royal Academy of the Netherlands, and in 2018 the Friedrich-Wilhelm Bessel Award of the Alexander von Humboldt Foundation. He has been listed as a Highly Cited Researcher by Clarivate Analytics since 2018.