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Bossoni, Lucia (author), Labra Muñoz, J. (author), van der Zant, H.S.J. (author), Čaluković, Vera (author), Lefering, A.J.E. (author), Egli, Ramon (author), Huber, Martina (author)Ferritin, the major iron storage protein in organisms, stores iron in the form of iron oxyhydroxide most likely involving phosphorous as a constituent, the mineral form of which is not well understood. Therefore, the question of how the ca. 2000 iron atoms in the ferritin core are magnetically coupled is still largely open. The ferritin core,...journal article 2023
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Hsu, C. (author), Rohde, Michael (author), Borin Barin, Gabriela (author), Gandus, Guido (author), Passerone, Daniele (author), Luisier, Mathieu (author), Ruffieux, Pascal (author), Fasel, Roman (author), van der Zant, H.S.J. (author), El Abbassi, M. (author)Creating a good contact between electrodes and graphene nanoribbons (GNRs) has been a long-standing challenge in searching for the next GNR-based nanoelectronics. This quest requires the controlled fabrication of sub-20 nm metallic gaps, a clean GNR transfer minimizing damage and organic contamination during the device fabrication, as well as...journal article 2023
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van Veen, F. (author), Ornago, L. (author), van der Zant, H.S.J. (author), El Abbassi, M. (author)Break-junction experiments are used to statistically study the electronic properties of individual molecules. The measurements consist of repeatedly breaking and merging a gold wire while measuring the conductance as a function of displacement. When a molecule is captured, a plateau is observed in the conductance traces otherwise exponentially...journal article 2023
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Ghasemi, Shima (author), Ornago, L. (author), Liasi, Zacharias (author), van der Poel, S. (author), Hölzel, Helen (author), Wang, Zhihang (author), van der Zant, H.S.J. (author), Lara-Avila, Samuel (author), Moth-Poulsen, Kasper (author)To achieve the ultimate limit of device miniaturization, it is necessary to have a comprehensive understanding of the structure–property relationship in functional molecular systems used in single-molecule electronics. This study reports the synthesis and characterization of a novel series of norbornadiene derivatives capped with thioether and...journal article 2023
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Hsu, C. (author), Costi, Theo A. (author), Vogel, David (author), Wegeberg, Christina (author), Mayor, Marcel (author), van der Zant, H.S.J. (author), Gehring, P. (author)Probing the universal low-temperature magnetic-field scaling of Kondo-correlated quantum dots via electrical conductance has proved to be experimentally challenging. Here, we show how to probe this in nonlinear thermocurrent spectroscopy applied to a molecular quantum dot in the Kondo regime. Our results demonstrate that the bias-dependent...journal article 2022
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Van Veen, Frederik H. (author), Ornago, L. (author), van der Zant, H.S.J. (author), El Abbassi, M. (author)Alkanes serve an important role as benchmark system in molecular electronics. However, a large variation in the conductance values is reported in the literature. To better understand these fluctuations, in this study we measure large molecular data sets (up to 100 000 breaking traces) of a series of alkanes with different lengths and...journal article 2022
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Wang, Y. (author), McCandless, Gregory T. (author), Wang, Xiaoping (author), Thanabalasingam, Kulatheepan (author), Wu, H. (author), Bouwmeester, D. (author), van der Zant, H.S.J. (author), Ali, M.N. (author), Chan, C.L. (author)The Kagome lattice is an important fundamental structure in condensed matter physics for investigating the interplay of electron correlation, topology, and frustrated magnetism. Recent work on Kagome metals in the AV3Sb5 (A = K, Rb, and Cs) family has shown a multitude of correlation-driven distortions, including symmetry breaking charge...journal article 2022
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Baum, T.Y. (author), Fernández, Saleta (author), Peña, Diego (author), van der Zant, H.S.J. (author)Polycyclic aromatic hydrocarbons radicals are organic molecules with a nonzero total magnetic moment. Here, we report on charge-transport experiments with bianthracene-based radicals using a mechanically controlled break junction technique at low temperatures (6 K). The conductance spectra demonstrate that the magnetism of the diradical is...journal article 2022
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Kuppusamy, Senthil Kumar (author), Mizuno, Asato (author), García-Fuente, Amador (author), van der Poel, S. (author), Heinrich, Benoît (author), Ferrer, Jaime (author), van der Zant, H.S.J. (author), Ruben, Mario (author)Spin-crossover (SCO) active iron(II) complexes are an integral class of switchable and bistable molecular materials. Spin-state switching properties of the SCO complexes have been studied in the bulk and single-molecule levels to progress toward fabricating molecule-based switching and memory elements. Supramolecular SCO complexes featuring...journal article 2022
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Lee, M. (author), Renshof, Johannes R. (author), van Zeggeren, K.J. (author), Houmes, M.J.A. (author), Lesne, E.L. (author), Siskins, M. (author), van Thiel, T.C. (author), Guis, R.H. (author), van Blankenstein, M.R. (author), Verbiest, G.J. (author), Caviglia, A. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)Suspended piezoelectric thin films are key elements enabling high-frequency filtering in telecommunication devices. To meet the requirements of next-generation electronics, it is essential to reduce device thickness for reaching higher resonance frequencies. Here, the high-quality mechanical and electrical properties of graphene electrodes...journal article 2022
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Daaoub, Abdalghani (author), Ornago, L. (author), Vogel, David (author), Bastante, Pablo (author), Sangtarash, Sara (author), Parmeggiani, Matteo (author), Kamer, Jerry (author), van der Zant, H.S.J. (author), Sadeghi, Hatef (author)Controlling charge transport through molecules is challenging because it requires engineering of the energy of molecular orbitals involved in the transport process. While side groups are central to maintaining solubility in many molecular materials, their role in modulating charge transport through single-molecule junctions has received less...journal article 2022
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Ornago, L. (author), Kamer, Jerry (author), El Abbassi, M. (author), Grozema, F.C. (author), van der Zant, H.S.J. (author)Switching effects are key elements in the design and characterization of nanoscale molecular electronics systems. They are used to achieve functionality through the transition between different conducting states. In this study, we analyze the presence of switching events in reference molecular systems, which are not designed to have switching...journal article 2022
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Lee, M. (author), Robin, M.P. (author), Guis, R.H. (author), Filippozzi, U. (author), Shin, D. (author), van Thiel, T.C. (author), Paardekooper, Stijn P. (author), Renshof, Johannes R. (author), van der Zant, H.S.J. (author), Caviglia, A. (author), Verbiest, G.J. (author), Steeneken, P.G. (author)Although 2D materials hold great potential for next-generation pressure sensors, recent studies revealed that gases permeate along the membrane-surface interface, necessitating additional sealing procedures. In this work, we demonstrate the use of free-standing complex oxides as self-sealing membranes that allow the reference cavity beneath...journal article 2022
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Labra Muñoz, J. (author), de Reuver, Arie (author), Koeleman, Friso (author), Huber, M. (author), van der Zant, H.S.J. (author)We report on the fabrication of single-electron devices based on horse-spleen ferritin parti-cles. At low temperatures the current vs. voltage characteristics are stable, enabling the acquisition of reproducible data that establishes the Coulomb blockade as the main transport mechanism through them. Excellent agreement between the...journal article 2022
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Schosser, Werner M. (author), Hsu, C. (author), Zwick, Patrick (author), Beltako, Katawoura (author), Dulic, Diana (author), Mayor, Marcel (author), van der Zant, H.S.J. (author), Pauly, Fabian (author)The possibility to study quantum interference phenomena at ambient conditions is an appealing feature of molecular electronics. By connecting two porphyrins in a cofacial cyclophane, we create an attractive platform for mechanically controlling electric transport through the intramolecular extent of π-orbital overlap of the porphyrins facing...journal article 2022
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Hsu, C. (author), Schosser, Werner M. (author), Zwick, Patrick (author), Dulic, Diana (author), Mayor, Marcel (author), Pauly, Fabian (author), van der Zant, H.S.J. (author)Intra- and intermolecular interactions are dominating chemical processes, and their concerted interplay enables complex nonequilibrium states like life. While the responsible basic forces are typically investigated spectroscopically, a conductance measurement to probe and control these interactions in a single molecule far out of equilibrium is...journal article 2022
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Siskins, M. (author), Kurdi, S. (author), Lee, M. (author), Slotboom, Benjamin J.M. (author), Xing, Wenyu (author), Mañas-Valero, Samuel (author), Coronado, Eugenio (author), Jia, Shuang (author), Han, Wei (author), van der Sar, T. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)Two-dimensional magnetic materials with strong magnetostriction are attractive systems for realizing strain-tuning of the magnetization in spintronic and nanomagnetic devices. This requires an understanding of the magneto-mechanical coupling in these materials. In this work, we suspend thin Cr<sub>2</sub>Ge<sub>2</sub>Te<sub>6</sub> layers...journal article 2022
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Dolleman, R.J. (author), Katan, A.J. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)Semi-permeable membranes are important elements in water purification and energy generation applications, for which the atomic thickness and strength of graphene can enhance efficiency and permeation rate while maintaining good selectivity. Here, we show that an osmotic pressure difference forms across a suspended graphene membrane as a...journal article 2021
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López-Cabrelles, Javier (author), Mañas-Valero, Samuel (author), Vitórica-Yrezábal, Iñigo J. (author), Siskins, M. (author), Lee, M. (author), Steeneken, P.G. (author), van der Zant, H.S.J. (author), Mínguez Espallargas, Guillermo (author), Coronado, Eugenio (author)Through rational chemical design, and thanks to the hybrid nature of metal-organic frameworks (MOFs), it is possible to prepare molecule-based 2D magnetic materials stable at ambient conditions. Here, we illustrate the versatility of this approach by changing both the metallic nodes and the ligands in a family of layered MOFs that allows the...journal article 2021
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Reznikova, Ksenia (author), Hsu, C. (author), Schosser, Werner M. (author), Gallego, Almudena (author), Beltako, Katawoura (author), Pauly, Fabian (author), van der Zant, H.S.J. (author), Mayor, Marcel (author)Quantum interference (QI) of electron waves passing through a single-molecule junction provides a powerful means to influence its electrical properties. Here, we investigate the correlation between substitution pattern, conductance, and mechanosensitivity in [2.2]paracyclophane (PCP)-based molecular wires in a mechanically controlled break...journal article 2021