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Ferrocenyl-Substituted Triazatruxenes: Synthesis, Electronic Properties, and the Impact of Ferrocenyl Residues on Directional On-Surface Switching on Ag(111)

A. Vogelsang, T. Birk, F. Paschke, A. Bauer, V. Enenkel, L. M. Holz, M. Fonin, and R. F. Winter

Inorg. Chem. 2023, 62, 16236, https://doi.org/10.1021/acs.inorgchem.3c03009

We report on seven new ferrocenyl-(1, 3)- and ferrocenyl-ethynyl-modified N,N′,N′′-triethyltriazatruxenes (^EtTATs) 4−7 as well as the dodecyl counterpart 2 of…

Multiscale Reciprocal Space Mapping of Magnetite Mesocrystals

A. Chumakova, T. Steegemans, I. A. Baburin, A. Mistonov, I. S. Dubitskiy, J. Schlotheuber, F. Kirner, S. Sturm, A. Lubk, K. Müller-Caspary, I. Wimmer, M. Fonin, E. V. Sturm, and A. Bosak

Adv. Mater. 2023, 35, 2207130, https://doi.org/10.1002/adma.202207130

Mesocrystals are a class of nanostructured material, where a multiple-length-scale structure is a prerequisite of many interesting phenomena. Resolving the mesocrystal structure…

Imaging the Single-Electron Ln–Ln Bonding Orbital in a Dimetallofullerene Molecular Magnet

F. Paschke, T. Birk, S. M. Avdoshenko, F. Liu, A. A. Popov, M. Fonin

Small 2022, 2105667, DOI:10.1002/smll.202105667

Chemically robust single-molecule magnets (SMMs) with sufficiently high blocking temperatures T_B are among the key building blocks for the realization of molecular spintronic or quantum computing devices. Such device applications require access to the magnetic system of a SMM molecule by…

Exceptionally High Blocking Temperature of 17 K in a Surface-Supported Molecular Magnet

F. Paschke, T. Birk, V. Enenkel, F. Liu, V. Romankov, J. Dreiser, A. A. Popov, and M. Fonin

Advanced Materials 2021, 33, 2102844, DOI:10.1002/adma.202102844

Single-molecule magnets (SMMs) are among the most promising building blocks for future magnetic data storage or quantum computing applications, owing to magnetic bistability and long magnetic relaxation times. The practical device integration requires…

Influence of surface and subsurface Co-Ir alloy on the electronic properties of graphene

K. Wang, T. Vincent, J. B. Bouhiron, S. Pons, D. Roditchev, S. Simon, M. Fonin, B. Paulus, Y. Dedkov, S. Vlaic, E. Voloshina

Carbon 2021, 183, 251-258, DOI:10.1016/j.carbon.2021.06.082

Using density functional theory (DFT) calculations and angle-resolved photoemission spectroscopy (ARPES) the structural and electronic properties of graphene on the surface and subsurface Co-Ir alloy are investigated upon…

Hydrogen‐Intercalated Graphene on SiC as Platform for Hybrid Superconductor Devices

F. Paschke, T. Birk, S. Forti, U. Starke, and M. Fonin

Advanced Quantum Technologies 2020, 3, 2000082, DOI:10.1002/qute.202000082

Nanodevices based on hybrid graphene–superconductor structures have recently attracted much attention owing to both fundamental and application aspects. However, atomic‐level investigations of proximity‐induced superconductivity in graphene, especially on technologically relevant…

Tip‐Induced Inversion of the Chirality of a Molecule's Adsorption Potential Probed by the Switching Directionality

A. Bauer, M. Maier, W. M. Schosser, J. Diegel, F. Paschke, Y. Dedkov, F. Pauly, R. F. Winter, and M. Fonin

Advanced Materials 2020, 32, 1907390, DOI:10.1002/adma.201907390

The switching behavior of surface-supported molecular units excited by current, light, or mechanical forces is determined by the shape of the adsorption potential. The ability to tailor the energy landscape in…

Quantum Well States for Graphene Spin-Texture Engineering

T. Vincent, E. Voloshina, S. Pons, S. Simon, M. Fonin, K. Wang, B. Paulus, D. Roditchev, Y. Dedkov, S. Vlaic

Journal of Physical Chemistry Letters 2020, 11, 1594, DOI:10.1021/acs.jpclett.0c00069

The modification of graphene band structure, in particular via induced spin−orbit coupling, is currently a great challenge for the scientific community from both a fundamental and applied point of view. Here, we investigate the modification of…

Electrospray Deposition and Magnetic Properties of Prototypical Molecular Magnets

F. Paschke, P. Erler, L. Gragnaniello, J. Dreiser and M. Fonin

Quantum Mater Res. 2020;1:e200002

The controlled deposition, characterization and manipulation of single molecule magnets (SMMs) on surfaces is one of the crucial points to be addressed with regard to their possible implementation as functional units in future electronic and spintronic devices. Profound understanding of molecule-molecule and…