Offres, Réseau
Offre Postdoc IEMN
Chercheur CDD (H/F) “Mesures SPM de magnéto-transport sur des nano-objets fonctionnalisés” Missions Development and implementation of nano-fabrication and local probe microscopy techniques to study the grafting, transport and magnetoresistance properties of nano-objects (NOs) functionalized by organic monolayers. Two families of molecules forming SAMs (self assembled monolayers) will be compared: single bonded (typically alkyl chains) and… Read More
publications, Réseau
Artificial Graphene Spin Polarized Electrode for Magnetic Tunnel Junctions
2D materials offer the ability to expose their electronic structure to manipulations by a proximity effect. This could be harnessed to craft properties of 2D interfaces and van der Waals heterostructures in devices and quantum materials. We explore the possibility to create an artificial spin polarized electrode from graphene through proximity interaction with a ferromagnetic… Read More
Offres, Réseau
Offre post doc SU
The LISE (Laboratoire Interfaces et Systèmes Electrochimiques) and LRS (Laboratoire de Réactivité de Surface) laboratories are two associated research units of the CNRS (« Unités Mixtes de Recherche »), which are localized at Sorbonne Université, on the Jussieu campus, Paris 5th . They are one of the partner of the cubic project funded by the… Read More
publications
Single-crystalline nanoribbon network field effect transistors from arbitrary two-dimensional materials
The last decade has seen a flurry of studies related to graphene nanoribbons owing to their potential applications in the quantum realm. However, little experimental work has been reported towards nanoribbons of other 2D materials. Here, we propose a universal approach to synthesize high-quality networks of nanoribbons from arbitrary 2D materials while maintaining high crystallinity,… Read More
Offres
Offre Postdoc LPEM
The project aims to address the emergence of new coherent quantum states with possible topological properties in hybrids composed of magnetic molecules self-assemblies and superconductors. The electronic and structural properties at very low temperatures in ultra-high vacuum conditions will be studied by STM/STS and AFM associated with angle-resolved photoemission measurements. The postdoctoral candidate will join… Read More
publications
Redox-controlled conductance of polyoxometalate molecular junctions
We demonstrate the reversible in situ photoreduction of molecular junctions of a phosphomolybdate [PMo12O40]3− monolayer self-assembled on flat gold electrodes, connected by the tip of a conductive atomic force microscope. The conductance of the one electron reduced [PMo12O40]4− molecular junction is increased by ∼10, and this open-shell state is stable in the junction in air at room temperature. The… Read More
publications
Encoding Information on the Excited State of a Molecular Spin Chain
The quantum states of nano-objects can drive electrical transport properties across lateral and local-probe junctions. This raises the prospect, in a solid-state device, of electrically encoding information at the quantum level using spin-flip excitations between electron spins. However, this electronic state has no defined magnetic orientation and is short-lived. Using a novel vertical nanojunction process,… Read More
publications
Combined spin filtering actions in hybrid magnetic junctions based on organic chains covalently attached to graphene
We present a bias-controlled spin-filtering mechanism in spin-valves including a hybrid organic chain/graphene interface. Wet growth conditions of oligomeric molecular chains would usually lead, during standard CMOS-compatible fabrication processes, to the quenching of spintronics properties of metallic spin sources due to oxidation. We demonstrate by X-ray photoelectron spectroscopy that the use of a protective graphene… Read More
publications
Negative Differential Resistance in Spin-Crossover Molecular Devices
We demonstrate, based on low-temperature scanning tunneling microscopy (STM) and spectroscopy, a pronounced negative differential resistance (NDR) in spin-crossover (SCO) molecular devices, where a FeII SCO molecule is deposited on surfaces. The STM measurements reveal that the NDR is robust with respect to substrate materials, temperature, and the number of SCO layers. This indicates that the… Read More
