A5008136068- Surface Chemistry and Catalysis
- Graphene research and applications
- Topological Materials and Phenomena
- Molecular Junctions and Nanostructures
- Surface and Thin Film Phenomena
- Porphyrin and Phthalocyanine Chemistry
- Machine Learning in Materials Science
- Diamond and Carbon-based Materials Research
- Advanced Condensed Matter Physics
- Radioactive element chemistry and processing
- Catalysis and Oxidation Reactions
- Metal and Thin Film Mechanics
- Pickering emulsions and particle stabilization
- Boron and Carbon Nanomaterials Research
- MXene and MAX Phase Materials
- Plasma Diagnostics and Applications
- X-ray Diffraction in Crystallography
- Advanced Thermoelectric Materials and Devices
- Crystallization and Solubility Studies
- Nanomaterials for catalytic reactions
- 2D Materials and Applications
- Magnetic Field Sensors Techniques
- Magnetic properties of thin films
- Graphene and Nanomaterials Applications
- Organoboron and organosilicon chemistry
Technical University of Munich
2021-2025
Madrid Institute for Advanced Studies
2023
Institut Català de Nanociència i Nanotecnologia
2017-2022
Universitat Autònoma de Barcelona
2017-2020
ALBA Synchrotron (Spain)
2015-2017
High-quality borophenes and borophene/hexagonal boron nitride heterostructures can be synthesized from molecular precursors.
We demonstrate the growth of twin-free Bi2Te3 and Sb2Te3 topological insulators by molecular beam epitaxy a sizable reduction twin density in Bi2Se3 on lattice-matched BaF2(111) substrates. Using X-ray diffraction, electron diffraction atomic force microscopy, we systematically investigate parameters influencing formation domains morphology films, show that Se- Te-based alloys differ their mechanism. Optimum are shown to result intrinsically low-doped as probed angle-resolved photoelectron...
We performed x-ray magnetic circular dichroism (XMCD) measurements on heterostructures comprising topological insulators (TIs) of the $(\mathrm{Bi},\mathrm{Sb}{)}_{2}(\mathrm{Se},\mathrm{Te}{)}_{3}$ family and insulator EuS. XMCD allow us to investigate element-selective proximity effects at very TI/EuS interface. A systematic analysis reveals that there is neither significant induced magnetism within TI nor an enhancement Eu moment such The moments in Bi, Sb, Te, Se sites are lower than...
The macrocyclic biquinazoline ligand, H‐Mabiq, presents a central and peripheral site for the coordination of metal ions, making adsorption on solid surfaces promising creation self‐assembled bimetallic two‐dimensional platforms. Here, we apply an on‐surface metalation strategy under ultra‐high vacuum conditions to guide synthesis metalated species study sequential patterns. We find that cobalt (as well as iron) Ag(111) surface preferentially occurs at centre without further site....
Controlling interfacial interactions in magnetic/topological insulator heterostructures is a major challenge for the emergence of novel spin-dependent electronic phenomena. As any rational design that rely on proximity effects, one should ideally retain overall properties each component while tuning at interface. However, most inorganic interfaces, are too strong, consequently perturbing, and even quenching, both magnetic moment topological surface states side Here, we show these can be...
Metallic surfaces with unidirectional anisotropy are often used to guide the self-assembly of organic molecules along a particular direction. Such supports thus offer an avenue for fabrication hybrid organic-metal interfaces tailored morphology and precise elemental composition. Nonetheless, such control comes at expense detrimental interfacial interactions that might quench pristine properties molecules. Here, hexagonal boron nitride grown on Ir(100) is introduced as robust platform several...
Intensive research has focused on harnessing the potential of graphene for electronic, optoelectronic, and spintronic devices by generating a bandgap at Dirac point enhancing spin-orbit interaction in layer. Proximity to heavy p elements is promising approach; however, their heterostructures not been as intensively studied that ferromagnetic, noble, or d metals, neither interlayers nor substrates. In this study, effective intercalation Te atoms Ir(111) heterostructure achieved. Combining...
Abstract This study investigates the synthesis of tetra‐ and octa‐O‐fused porphyrinoids employing an oxidative O‐annulation approach through C−H activation. Despite encountering challenges such as overoxidation instability in conventional solution protocols, successful was achieved on Au(111) surfaces under ultra‐high vacuum (UHV) conditions. X‐ray photoelectron spectroscopy, scanning tunneling microscopy, non‐contact atomic force microscopy elucidated preferential formation pyran moieties...
This study investigates the synthesis of tetra- and octa-O-fused porphyrinoids employing an oxidative O-annulation approach through C-H activation. Despite encountering challenges such as overoxidation instability in conventional solution protocols, successful was achieved on Au(111) surfaces under ultra-high vacuum (UHV) conditions. X-ray photoelectron spectroscopy, scanning tunneling microscopy, non-contact atomic force microscopy elucidated preferential formation pyran moieties via C-O...
The on-surface synthesis strategy has emerged as a promising route for fabricating well-defined two-dimensional (2D) BN-substituted carbon nanomaterials with tunable electronic properties. This approach relies on specially designed precursors and requires thorough understanding of the reaction pathways. It promises precise structural control at atomic scale, thus complementing chemical vapor deposition (CVD). In this study, we investigated novel heteroatomic precursor, tetrabromoborazine,...
The self-assembly of metal–organic complexes and networks increasing complexity on solid surfaces is important for their application in a variety fields, such as catalysis, sensing, molecular magnetism. Here, we have selected low-symmetry, free-base macrocyclic biquinazoline ligand, H-Mabiq, which upon metalation has the potential to incorporate cations two different coordination sites, affording multi-valency multi-electron transfer capacity. We show that H-Mabiq molecules readily...