Unravelling strong electronic interlayer and intralayer correlations in a transition metal dichalcogenide.

Electronic correlations play important roles in driving exotic phenomena in condensed matter physics. They determine low-energy properties through high-energy bands well-beyond optics. Great effort has been made to understand low-energy excitations such as low-energy excitons in transition metal dichalcogenides (TMDCs), however their high-energy bands and interlayer correlation remain mysteries.

A New Spin-Correlated Plasmon in Novel Highly Oriented Single-Crystalline Gold Quantum Dots.

A concept of spin plasmon, a collective mode of spin-density, in strongly correlated electron systems has been proposed since the 1930s. It is expected to bridge between spintronics and plasmonics by strongly confining the photon energy in the subwavelength scale within single magnetic-domain to enable further miniaturizing devices. However, spin plasmon in strongly correlated electron systems is yet to be realized.

Electronic Modulation in Site-Selective Occupation of Quasi-2D Triangular-Lattice CsCuClBr Perovskite Probed by Surface-Sensitive Characterization.

A controllable electronic manipulation in a frustrated magnetic system such as solution-based two-dimensional (2D) all-inorganic perovskites offers a possible route for their integrations with electronic and magnetic devices for their advanced applications. Here, we perform element-specific investigations of an emergent class of quasi-2D all-inorganic perovskites CsCuClBr with (0 ≤ ≤ 4) using a combination of synchrotron-radiation photoelectron techniques. Surface- and element-sensitive X-ray absorption spectroscopy spectra of Cu edges indicate strong electronic transition that is largely influenced by their halogen content at room temperature.

Mechanisms of spin-flipping and metal-insulator transition in nano-FeO.

FeO is a half-metallic ferrimagnet with [Formula: see text] K exhibiting metal-insulator transition (MIT) at  ∼120 K. In bulk form, the saturation magnetization is 0.6 Tesla (∼471 emu cm).