A5032919127- Electronic and Structural Properties of Oxides
- Advanced Condensed Matter Physics
- Advanced Memory and Neural Computing
- Transition Metal Oxide Nanomaterials
- Physics of Superconductivity and Magnetism
- Quantum Dots Synthesis And Properties
- nanoparticles nucleation surface interactions
- Copper-based nanomaterials and applications
- Perovskite Materials and Applications
- 2D Materials and Applications
- Electrochemical Analysis and Applications
- Iron-based superconductors research
- Near-Field Optical Microscopy
- Magnetic and transport properties of perovskites and related materials
- Spectroscopy and Laser Applications
- Force Microscopy Techniques and Applications
- Characterization and Applications of Magnetic Nanoparticles
- Gold and Silver Nanoparticles Synthesis and Applications
- ZnO doping and properties
- Thermal Radiation and Cooling Technologies
- Catalysis and Oxidation Reactions
- Spectroscopy and Quantum Chemical Studies
- Thermography and Photoacoustic Techniques
- Advanced Chemical Physics Studies
- Fluid Dynamics and Thin Films
Università Cattolica del Sacro Cuore
2017-2023
KU Leuven
2017-2023
ORCID
2021
VIB-KU Leuven Center for Microbiology
2018
Many puzzling properties of high-$T_c$ superconducting (HTSC) copper oxides have deep roots in the nature antinodal quasiparticles, elementary excitations with wavevector parallel to Cu-O bonds. These electronic states are most affected by onset antiferromagnetic correlations and charge instabilities they host maximum anisotropic gap pseudogap. In this work, we use time-resolved extreme-ultra-violet (EUV) photoemission proper photon energy (18 eV) time-resolution (50 fs) disclose ultrafast...
Unveiling the physics that governs intertwining between nanoscale self-organization and dynamics of insulator-to-metal transitions (IMTs) is key for controlling on demand ultrafast switching in strongly correlated materials nanodevices. A paradigmatic case IMT ${\mathrm{V}}_{2}{\mathrm{O}}_{3}$, which mechanism leads to nucleation growth metallic nanodroplets out supposedly homogeneous Mott insulating phase still a mystery. Here, we combine x-ray photoemission electron microscopy...
Abstract Mott transitions in real materials are first order and almost always associated with lattice distortions, both features promoting the emergence of nanotextured phases. This nanoscale self-organization creates spatially inhomogeneous regions, which can host protect transient non-thermal electronic states triggered by light excitation. Here, we combine time-resolved X-ray microscopy a Landau-Ginzburg functional approach for calculating strain real-space configurations. We investigate...
Time-effective, unsupervised clustering techniques are exploited to discriminate nanometric metal disks patterned on a dielectric substrate. The discrimination relies cluster analysis applied time-resolved optical traces obtained from thermo-acoustic microscopy based asynchronous sampling. aims recognize similarities among nanopatterned and them accordingly. Each is characterized by fingerprint trace, synthesizing the common features of thermo-acoustics response composing elements. protocol...
The Thermal Boundary Resistance at the interface between a nanosized Al film and an Al_{2}O_{3} substrate is investigated atomistic level. A room temperature value of 1.4 m^{2}K/GW found. thermal dynamics occurring in time-resolved thermo-reflectance experiments then modelled via macro-physics equations upon insertion materials parameters obtained from simulations. Electrons phonons non-equilibrium spatio-temporal temperatures inhomo- geneities are found to persist up nanosecond time scale....
The full control of the fundamental photophysics nanosystems at frequencies as high few THz is key for tunable and ultrafast nanophotonic devices metamaterials. Here we combine geometrical optical properties halide perovskite nanoparticles, which constitute a prominent platform nanophotonics. pulsed photoinjection free carriers across semiconducting gap leads to subpicosecond modification far-field electromagnetic that fully controlled by geometry system. When nanoparticle size tuned so...
Managing light-matter interactions on timescales faster than the loss of electronic coherence is key for achieving full quantum control final products in solid-solid transformations. In this work, we demonstrate coherent photoinduced insulator-to-metal transition prototypical Mott insulator V$_2$O$_3$. Selective excitation a specific interband with two phase-locked light pulses manipulates orbital occupation correlated bands way that depends evolution superposition states. A comparison...
Abstract The thermo-mechanical properties of streptavidin-conjugated gold nanospheres, adhered to a surface via complex molecular chains, are investigated by two-color infrared asynchronous optical sampling pump-probe spectroscopy. Nanospheres with different densities have been deposited and exposed plasma treatment modify their polymer binding chains. aim is monitor response in chemical environments that may be experienced in, e.g., photothermal therapy or drug delivery applications. By...
The insulator-to-metal transition in Mott insulators is the key mechanism for a novel class of electronic devices, belonging to Mottronics family. Intense research efforts are currently devoted development specific control protocols, usually based on application voltage, strain, pressure and light excitation. ultimate goal achieve complete phase transformation, with dramatic impact performance, example, resistive switching devices. Here, we investigate simultaneous effect external voltage...
Multiorbital correlated materials are often on the verge of multiple electronic phases (metallic, insulating, super- conducting, charge and orbitally ordered), which can be explored controlled by small changes external parameters. The use ultrashort light pulses as a mean to transiently modify band population is leading fundamentally new results. In this paper we will review recent advances in field discuss pos- sibility manipulating orbital polarization multi-band solid state systems. This...
Abstract Mott transitions in real materials are first order and almost always associated with lattice distortions, both features promoting the emergence of nanotextured phases. This nanoscale self-organization creates spatially inhomogeneous regions, which can host protect transient non-thermal electronic states triggered by light excitation. However, to gain full control transition for potential applications field ultrafast switching neuromorphic computing it is necessary develop novel...