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Engineering Spin Interaction Channels of FePc on Au(111).
Nano Lett
January 2025
Center for Quantum Nanoscience, Institute for Basic Science, Seoul 03760, South Korea.
We demonstrate the reversible control of interactions between a local molecular spin, hosted within an iron phthalocyanine (FePc) molecule, and the conduction electrons of a supporting Au(111) surface. Using the tip of a scanning tunneling microscope, we deliberately and reversibly manipulate the adsorption configuration of the molecule relative to the underlying substrate lattice. Different rotation configurations lead to noticeable changes in the differential conductance measured on the FePc molecules.
View Article and Find Full Text PDFDirect Electrical Access to the Spin Manifolds of Individual Lanthanide Atoms.
ACS Nano
January 2025
IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States.
Lanthanide atoms show long magnetic lifetimes because of their strongly localized 4 electrons, but electrical control of their spins has been difficult because of their closed valence shell configurations. We achieved electron spin resonance of individual lanthanide atoms using a scanning tunneling microscope to probe the atoms bound to a protective insulating film. The atoms on this surface formed a singly charged cation state having an unpaired 6 electron, enabling tunnel current to access their 4 electrons.
View Article and Find Full Text PDFA multi-state supramolecular switch realized a [π⋯π] dimer.
Phys Chem Chem Phys
December 2024
College of Information Science and Technology, Nanjing Forestry University, Nanjing 210037, China.
Supramolecular assemblies have attracted great attention in the latest studies of molecular electronic devices for their superiorities. Here, we design a non-covalent [π⋯π] dimer made of DCV4Ts (two-terminally dicyanovinyl-substituted quaterthiophenes), and five typical conformations of this dimer are specifically focused on. Based on density-functional theory calculations and the non-equilibrium Green's function technique, electron transport properties through the dimer are mainly investigated in molecular junctions.
View Article and Find Full Text PDFTransitions between positive and negative charge states of dangling bonds on a halogenated Si(100) surface.
Phys Chem Chem Phys
December 2024
Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia.
Dangling bonds (DBs) are common defects in silicon that affect its electronic performance by trapping carriers at the in-gap levels. For probing the electrical properties of individual DBs, a scanning tunneling microscope (STM) is an effective instrument. Here we study transitions between charge states of a single DB on chlorinated and brominated Si(100)-2 × 1 surfaces in an STM.
View Article and Find Full Text PDFObservation of Yu-Shiba-Rusinov-like states at the edge of CrBr/NbSe heterostructure.
Nat Commun
November 2024
School of Emerging Technology and Department of Physics, University of Science and Technology of China, Hefei, 230026, China.
The hybrid ferromagnet-superconductor heterostructures have attracted extensive attention as they potentially host topological superconductivity. Relevant experimental signatures have recently been reported in CrBr/NbSe ferromagnet-superconductor heterostructure, but controversies remain. Here, we reinvestigate CrBr/NbSe by an ultralow temperature scanning tunneling microscope with higher spatial and energy resolutions.
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