Person
Katharina Johanna Diller
This person is no longer with EPFL
Related publications (11)
Unconventional Spin Relaxation Involving Localized Vibrational Modes in Ho Single-Atom Magnets
Harald Brune, Stefano Rusponi, Marina Pivetta, Christian Wäckerlin, Jan Gui-Hyon Dreiser, Pietro Gambardella, Fabio Donati, Aparajita Singha, Romana Baltic, Katharina Johanna Diller
We investigate the spin relaxation of Ho single atom magnets on MgO/Ag(100) as a function of temperature and magnetic field. We find that the spin relaxation is thermally activated at low field, while it remains larger than 1000 s up to 30 K and 8 T. This ...
AMER PHYSICAL SOC2020Understanding the Superior Stability of Single-Molecule Magnets on an Oxide Film
Harald Brune, Stefano Rusponi, Jan Gui-Hyon Dreiser, Fabio Donati, Aparajita Singha, Romana Baltic, Katharina Johanna Diller
The stability of magnetic information stored in surface adsorbed single-molecule magnets is of critical interest for applications in nanoscale data storage or quantum computing. The present study combines X-ray magnetic circular dichroism, density function ...
WILEY2019Magnetic properties of on-surface synthesized single-ion molecular magnets
Harald Brune, Stefano Rusponi, Marina Pivetta, Jan Gui-Hyon Dreiser, Aparajita Singha, Katharina Johanna Diller
We perform on-surface synthesis of single-ion molecular magnets on an Ag(111) surface and characterize their morphology, chemistry, and magnetism. The first molecule we synthesize is TbPc2 to enable comparison with chemically synthesized and subsequently s ...
2019Interpretation of x-ray absorption spectroscopy in the presence of surface hybridization
X-ray absorption spectroscopy (XAS) yields direct access to the electronic and geometric structure of hybrid inorganic-organic interfaces formed upon adsorption of complex molecules at metal surfaces. The unambiguous interpretation of corresponding spectra ...
American Institute of Physics2017In vacuo interfacial tetrapyrrole metallation
The metallation of tetrapyrroles at well-defined surfaces under ultra-high vacuum conditions represents an unconventional synthesis approach to achieve tetrapyrrole-based metal-organic complexes and architectures. Different protocols, pioneered over the la ...
2016In Vacuo Porphyrin Metalation on Ag(111) via Chemical Vapor Deposition of Ru-3(CO)(12): Mechanistic Insights
Porphyrin molecules offer a very stable molecular environment for the incorporation of numerous metal ions inside their cavity, which enables a plethora of applications. The fabrication and characterization of surface confined metal organic architectures b ...
American Chemical Society2016Dynamics of Spatially Confined Bisphenol A Trimers in a Unimolecular Network on Ag(111)
Bisphenol A (BPA) aggregates on Ag(111) shows a polymorphism between two supramolecular motifs leading to formation of distinct networks depending on thermal energy. With rising temperature a dimeric pairing scheme reversibly converts into a trimeric motif ...
American Chemical Society2016Interfacial charge rearrangement and intermolecular interactions: Density-functional theory study of free-base porphine adsorbed on Ag(111) and Cu(111)
We employ dispersion-corrected density-functional theory to study the adsorption of tetrapyrrole 2H-porphine (2H-P) at Cu(111) and Ag(111). Various contributions to adsorbate-substrate and adsorbate-adsorbate interactions are systematically extracted to an ...
American Institute of Physics2016Magnetic remanence in single atoms
Harald Brune, François Patthey, Stefano Rusponi, Edgar Fernandes, Jan Gui-Hyon Dreiser, Pietro Gambardella, Fabio Donati, Aparajita Singha, Zeljko Sljivancanin, Romana Baltic, Katharina Johanna Diller
A permanent magnet retains a substantial fraction of its saturation magnetization in the absence of an external magnetic field. Realizing magnetic remanence in a single atom allows for storing and processing information in the smallest unit of matter. We s ...
American Association for the Advancement of Science2016Giant Hysteresis of Single-Molecule Magnets Adsorbed on a Nonmagnetic Insulator
Harald Brune, François Patthey, Stefano Rusponi, Marina Pivetta, Christian Wäckerlin, Jan Gui-Hyon Dreiser, Fabio Donati, Aparajita Singha, Romana Baltic, Katharina Johanna Diller
TbPc2 single-molecule magnets adsorbed on a magnesium oxide tunnel barrier exhibit record magnetic remanence, record hysteresis opening, perfect out-of-plane alignment of the magnetic easy axes, and self-assembly into a well-ordered layer. ...
Wiley-Blackwell2016