Electronic properties of the single crystal of GdV6Sn6, where non-magnetic V-kagome layers are separated by magnetic Gd-triangular lattice, are investigated. GdV6Sn6 exhibits unique magnetotranspor...

A combination of single-crystal neutron diffraction experiments at low temperature and first-principles calculations revealed that a correlated migration of the densely packed Li ions governs the overall Li-ion conduction in Li ₁₀ GeP ₂ S ₁₂ .

In 2012, a novel superconductor BaTi₂Sb₂O was found in the layered titanium pnictide oxides ATi₂Pn₂O. A related superconductor BaTi₂Bi₂O was subsequently discovered in 2013. The structure of these materials consists of alternate stacking of superconducting Ti₂Pn₂O layers and Ba blocking layers, which is somewhat similar to high-T_c cuprates since the Ti₂Pn₂O layer contains an anti-CuO₂-type Ti₂O square lattice. In addition to the structural similarity to the well-known high-T_c superconductors, BaTi₂Pn₂O shows unique physical properties: two superconducting domes appear in the electronic phase diagram for solid solutions of BaTi₂(Sb_1‒xBi_x)₂O and a unique density-wave instability which coexists with superconductivity. In this short review, the early studies of titanium pnictide oxides, the discovery of novel superconductors BaTi₂Pn₂O, and recent progress are summarized.

We devised a portable system that generates pulsed high magnetic fields up to 77 T with 3 μs duration. The system employs the single turn coil method, a destructive way of field generation. The system consists of a capacitor of 10.4 μF, a 30 kV charger, a mono air-gap switch, a triggering system, and a magnet clamp, which weighs less than 1.0 tons in total and is transportable. The system offers opportunities for single-shot experiments at ultrahigh magnetic fields in combinations with novel quantum beams. The single-shot x-ray diffraction experiment using a x-ray free-electron laser at 65 T is presented. We comment on the possible update of the system for the generation of 100 T.

We report magnetic properties of a $4f$ honeycomb iodide $\mathrm{Sm}{\mathrm{I}}_3$ made up of edge-shared network of $\mathrm{Sm}{\mathrm{I}}_6$ octahedra. High temperature magnetic susceptibility indicates a ${\mathrm{\Gamma }}_7$ Kramers doublet ground state of ${\mathrm{Sm}}^{3+}\left(4f^5\right)$ ions stabilized by the spin-orbit coupling and octahedral crystal electric field, which interact with a Sm-I-Sm bond angle of nearly ${90}^{\circ }$. Magnetization measurements down to 0.1 K detected antiferromagnetic correlations and an anomaly in the magnetization curve before saturation without a sign of long-range order. Relevance between $\mathrm{Sm}{\mathrm{I}}_3$ and the antiferromagnetic Kitaev material proposed in the $4f\text{−}\mathrm{electron}$ system is discussed.