Research Interests
I explore new strategies to build functional devices based on nanostructures and new materials – and in the meanwhile to contribute to a better understanding of their physical properties.
Main Research interests :
- Charge & Spin transport properties of 2D materials and van der Waals heterostructures.
- Optoelectronics properties of nanomaterials (Quantum dots, Molecules, 2D materials and their hybrids).
- Magnetic properties of nanomaterials.
- Multi-functional devices.
- Nanofabrication
Scientific life : I am co-animating the Research Axis “Electronic Transport and its Interfaces” of the GDR 2112 “HOWDI” research group: Van der Waals hetero-structures of low dimensionality.
Instrumentation
- Nanofabrication @ StNano clean room.
- Van der Waals engineering of 2D heterostructures @ 2DLab in IPCMS.
- Optical & electronic lithography.
- Low temperature magneto-transport measurements (AC/DC, 1.5K to 400K, 9 Tesla, rotatory field).
- Photoconduction measurements (low T°).
- AFM, PFM…
- Focus Ion Beam.
Present status
- Professor at Université de Strasbourg (UNISTRA).
- Junior Fellow at Institut Universitaire de France (IUF) (2019-2024).
- Teaching responsabilities :
– Laboratory practicals of nanofabrication in cleanroom & electrical transport measurements
– Laboratory internships of Master I Physics students.
– co-Head of Master 2 Quantum Technology – European Program (QTEP)
Publications
For an updated list of publication check :
Some example of work done in our team :
- Reconfigurable Multifunctional van der Waals Ferroelectric Devices and Logic Circuits
A Ram, et al. ACS Nano 2023, 17, 21865. - Electrical Readout of Light-Induced Spin Transition in Thin Film Spin Crossover/Graphene Heterostructure
N Konstantinov et al., Journal of Materials Chemistry C 2021, 9, 2712. (link here) - Reconfigurable 2D/0D p-n Graphene/HgTe Nanocrystal Heterostructure for Infrared Detection
U.N. Noumbe et al., ACS Nano 2020, 14, 4567. (link here) - Conductivity in organic semiconductors hybridized with the vacuum field
E. Orgiu et al. Nature Materials 2015, 14, 1123. - Nanoplatelets bridging a Nanotrench: a new architecture for photodetectors with increased sensitivity.
E. Lhuillier*, J.F. Dayen* et al., Nano Letters 2015, 15, 1736.(link here) - Voltage-controlled inversion of tunnel magnetoresistance in epitaxial Nickel/Graphene/MgO/Cobalt junctions
F. Godel et al., Appl. Phys. Lett. 2014, 105, 152407. (link here) - Enhancing the Molecular Signature in Molecule-Nanoparticle Networks Via Inelastic Cotunneling.
J.-F. Dayen et al. Advanced Materials 2013, 25, 400–404. (link here) - Light triggered self-fabrication of supramolecular organic nanowires as metallic interconnects.
V.Faramarzi et al., Nature Chemistry 2012, 4,485–490.(link here)
Review article :
- Two-dimensional van der Waals spinterfaces and magnetic-interfaces
J.F. Dayen*, S. J. Ray, O. Karis, I.J. Vera-Marun* and M. Venkata Kamalakar*
Applied Physics Review 2020, 7, 011303 (2020) (link here)