A5064526824- Quantum and electron transport phenomena
- Molecular Junctions and Nanostructures
- Surface and Thin Film Phenomena
- Magnetic properties of thin films
- Electronic and Structural Properties of Oxides
- Machine Learning in Materials Science
- Theoretical and Computational Physics
- Force Microscopy Techniques and Applications
- Physics of Superconductivity and Magnetism
- Porphyrin and Phthalocyanine Chemistry
- Topological Materials and Phenomena
- Quantum Computing Algorithms and Architecture
- Magnetic confinement fusion research
- Magnetism in coordination complexes
- Molecular spectroscopy and chirality
- Opinion Dynamics and Social Influence
- Advanced Condensed Matter Physics
- Quantum many-body systems
- Fusion materials and technologies
- Electromagnetic Effects on Materials
- Surface Chemistry and Catalysis
Radboud University Nijmegen
2022-2024
Radboud Institute for Molecular Life Sciences
2022-2024
Radboud University Medical Center
2022-2024
Centre National de la Recherche Scientifique
2017-2022
Institut de Physique et Chimie des Matériaux de Strasbourg
2016-2022
Université de Strasbourg
2017-2022
Recent advances in scanning probe techniques rely on the chemical functionalization of probe-tip termination by a single molecule. The success this approach opens tantalizing prospect introducing spin sensitivity through magnetic Here, we use nickelocene-terminated tip (Nc-tip), which offers possibility producing excitations apex tunneling microscope (STM). We show that when Nc-tip is hundred pm away from point contact with surface-supported object, effects may be probed changes excitation...
The active control of a molecular spin represents one the main challenges in spintronics. Up to now manipulation has been achieved through modification structure either by chemical doping or external stimuli. However, molecule adsorbed on surface depends primarily interaction between its localized orbitals and electronic states substrate. Here we change effective single modifying molecule/metal interface controlled way using low-temperature scanning tunneling microscope. A nickelocene...
Inelastic electron tunneling spectroscopy (IETS) within the junction of a scanning microscope (STM) uses current-driven spin-flip excitations for an all-electrical characterization spin state single object. Usually decoupling layers between object, atom or molecule, and supporting surface are needed to observe these excitations. Here we study magnetism sandwich nickelocene molecule (Nc) adsorbed directly on Cu(100) by means X-ray magnetic circular dichroism (XMCD) density functional theory...
The manipulation of a molecular spin state in low-dimensional materials is central to spintronics. designs hybrid devices incorporating magnetic metallocenes are very promising this regard, but hampered by the lack data regarding their interaction with metal. Here, we combine low-temperature scanning tunneling microscopy and density functional theory calculations investigate metallocene at single-molecule level---nickelocene. We demonstrate that chemical electronic structures nickelocene...
Temperature in thermodynamics is synonymous with disorder, and responsible for ultimately destroying ordered phases. Here, we show an unusual magnetic transition where, increasing the temperature of elemental neodymium, long-range multi-Q order emerges from a self-induced spin glass. Using temperature-dependent spin-polarized scanning tunneling microscopy, characterize local Q spin-Q glass phase quantify emergence temperature. We develop two distinct analysis tools, which enable...
Artificial lattices derived from assembled atoms on a surface using scanning tunneling microscopy present platform to create matter with tailored electronic, magnetic, and topological properties. However, artificial lattice studies date have focused exclusively surfaces weak spin–orbit coupling. Here, we illustrate the creation characterization of quantum corrals iron prototypical Rashba alloy BiCu2, low-temperature spectroscopy. We observe very complex interference patterns that result...
A single molecule offers to tailor and control the probing capability of a scanning tunneling microscope when placed on tip. With help first-principles calculations, we show that on-tip spin sensitivity is possible through Kondo ground state S = 1/2 cobaltocene molecule. When attached tip apex, observe reproducible resonance, which splits apart upon tuning exchange coupling an iron atom surface. The spin-split resonance provides quantitative information field polarization atom. We also...
Abstract The electrical control and readout of molecular spin states are key for high-density storage. Expectations that electrically-driven vibrational excitations in a molecule should give rise to new conductance features the presence magnetic anisotropy, offering alternative routes study and, ultimately, manipulate magnetism. Here, we use inelastic electron tunneling spectroscopy promote detect excited prototypical with anisotropy. We demonstrate existence vibron-assisted excitation can...
Combining the complex ordering ability of molecules with their local magnetic properties is a little-explored technique to tailor spin structures on surfaces. However, revealing molecular geometry can be demanding. Nickelocene (Nc) present large spin-flip excitation leading clear changes conductance at excitation-threshold bias. Using superconducting tip, we have energy resolution detect small shifts Nc thresholds, permitting us reveal different individual environments in an ordered layer....
Excitations of individual and coupled spins on superconductors provide a platform to study quantum spin impurity models as well pathway toward realizing topological computing. Here, we characterize, using ultralow temperature scanning tunneling microscopy/spectroscopy, the Yu-Shiba-Rusinov (YSR) states manganese phthalocyanine molecules with high an ultrathin lead film in variable transverse magnetic field. We observe two types YSR excitations, depending adsorption geometry. Using...
Excitations of individual and coupled spins on superconductors provide a platform to study quantum spin impurity models as well pathway toward realizing topological computing. Here, we characterize, using ultra-low temperature scanning tunneling microscopy/spectroscopy, the Yu-Shiba-Rusinov (YSR) states manganese phthalocyanine molecules with high character surface an ultra-thin lead film in variable transverse magnetic field. We observe two types YSR excitations, depending adsorption...
We studied the spin-flip excitations of a double-decker nickelocene molecule (Nc) adsorbed on Cu(100) by means inelastic tunneling spectroscopy (IETS), X-ray magnetic circular dichroism (XMCD) and density functional theory calculations (DFT). The results show that preserves its moment anisotropy not only Cu(100), but also in different metallic environments including tip apex. Taking advantage efficient excitation this molecule, we how such molecular functionalized boosts signal surface...
A simple double-decker molecule with magnetic anisotropy, nickelocene, is attached to the metallic tip of a low-temperature scanning tunneling microscope. In presence Cu(100) surface, conductance around Fermi energy governed by spin-flip scattering, nature which determined barrier thickness. The molecular exhibits inelastic scattering in regime, while contact regime Kondo ground state stabilized causing an order magnitude change zero-bias conductance. First principle calculations show that...
We create ordered islands of magnetically anisotropic nickelocene molecules on a Pb (111) substrate. By using inelastic electron tunneling spectra (IETS) and density functional theory, we characterize the magnetic response these islands. This allows us to conclude that present local collective excitations. Furthermore, show complex non-collinear spin patterns superconducting surface, opening possibility molecular arrays engineer textures with important implications topological superconductivity.
Artificial lattices created by assembling atoms on a surface with scanning tunneling microscopy present platform to create matter tailored electronic, magnetic and topological properties. However, such artificial studies date have focused exclusively surfaces weak spin-orbit coupling. Here, we coupled quantum dots fabricating corrals from iron the prototypical Rashba alloy, BiCu2, using low-temperature microscopy. We quantified confinement of various diameter related this spatially dependent...