Cheng Ji

TL;DR: This paper discovers the pressure-induced 3D Dirac semimetal to superconductor transition in ZrTe5 and indicates the observed two-stage superconducting behavior is correlated to the structural phase transition from ambient Cmcm phase to high-pressure C2/m phase around 6 GPa, and to a mixture of two high- pressure phases of C 2/m and P-1 above 20 GPa.

TL;DR: The results demonstrate a potential of low pressure–room temperature synthesis of superhard materials under plastic shear from disordered or amorphous precursors and open a pathway of phase transformation of nanocrystalline materials and materials with disordered andAmorphous structures under extensive shear.

TL;DR: X-ray diffraction measurements of solid hydrogen provide crystallographic information for high-pressure phases of hydrogen and transitions between them, suggesting a series of isostructural transitions under compression before band closure and metallization.

TL;DR: Details of pressure loading, distribution, gasket-thickness variation, and diamond anvil deformation were studied to understand the generation of ultrahigh pressures, which may improve the conventional DAC techniques.

TL;DR: It is shown that the original molecular nitrogen is transformed into extended single-bonded structure through gauche and trans conformations and Raman spectroscopy shows that black phosphorus–structured nitrogen is strongly anisotropic and exhibits high Raman intensities in two Ag normal modes.