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The knowledge of how electrons behave under magnetic field provides inherent information for exotic quantum states. Here, Fu et al. find different g-factors of topological surface states in Bi₂Se₃ and Sb₂Te₂Se, which suggests possible control of such states in spin-related applications.

Multipolarons provide a potential platform for manipulating electrons. Here, the authors demonstrate the creation and manipulation of multipolarons in CrBr₃ via the tip of a scanning tunneling microscope.

Two-dimensional topological insulators support edge conduction electrons but its realization in real materials is rare. Here, Peng et al. report the direct observation of topological states at the step edge of WTe₂.

Detecting the localized nature of 4f orbitals in lanthanide ion is a major challenge. Here, the authors resolve the spatially dependent f-π exchange interaction within a single-molecule magnet TbPc₂ and show their spin states can be electrically controlled in a reversible manner.

The authors observe a coherent Kondo lattice in a monolayer of VSe₂ grown on a superconducting 2H-NbSe₂ substrate. Superconductivity is established in the Kondo lattice through proximity effect from the substrate.

The electrons associated with the conducting surface states of topological insulators are described by a two-component wavefunction. Experiments on Bi₂Se₃ now show that the structure of Landau levels reflects this two-component nature.

The realization of heavy-fermion physics in van der Waals materials with d-electrons has attracted attention recently. Here the authors present evidence for a quasi-1D Kondo lattice in monolayer NbSe₂, driven into a stripe phase by Se-deficient line defects created during growth.

Using scanning tunnelling microscopy (STM) and spectroscopy, the authors show the visualization and manipulation of single polarons in monolayer CoCl₂. Polarons can be created, moved, erased, and interconverted individually by the STM tip.

Yu-Shiba-Rusinov (YSR) states result from the exchange coupling between a localized magnetic moment and a superconductor. Traditionally, the YSR states have been studied for magnetic atoms. For molecular magnets with extended ligand spin, the entanglement of spin and ligand orbital gives rise to new forms of YSR excitations. Here, Xia et al uncovered spin-orbital YSR states in an unpaired ligand spin in the molecular magnet Tb2Pc3 on Pb.

In two dimensions magnetic order without magnetic anisotropy is forbidden, making 2D magnetic systems a rich playground for interesting physics. Here, Xian et al. fabricate monolayers of CrTe2, and demonstrate antiferromagnetic ordering, with spin reorientation at finite magnetic fields.