Dingyu Xing

Grain size-dependent magnetism in fine particle perovskite, La1−xSrxMnOz

The grain size-dependent magnetism in fine particle perovskite, La1−xSrxMnO3 (0.1<x<0.55), has been investigated. For the samples with different concentrations, different grain size-dependent magnetism has been observed. Meanwhile, different grain size dependencies of lattice distortions and structure phase transitions have also been observed for the various doped samples. The phenomena suggest a structure-coupled change of magnetism in the double exchange perovskite.

Origin of superconductivity in the Weyl semimetal WT e2 under pressure

Tungsten ditelluride (WTe2) has attracted significant attention due to its interesting electronic properties, such as the unsaturated magnetoresistance and superconductivity. Recently, it has been proposed to be a new type of Weyl semimetal, which is distinguished from other transition metal dichalcogenides (TMDs) from a topological prospective. Here, we study the structure of WTe2 under pressure with a crystal structure prediction and ab initio calculations combined with high pressure synchrotron X-ray diffraction and Raman spectroscopy measurements. We find that the ambient orthorhombic structure (Td) transforms into a monoclinic structure (1T) at around 4-5 GPa. As the transition pressure is very close to the critical point in recent high-pressure electrical transport measurements, the emergence of superconductivity in WTe2 under pressure is attributed to the Td-1T structure phase transition, which associates with a sliding mechanism of the TMD layers and results in a shorter Te-Te interlayer distance compared to the intralayer ones. These results highlight the critical role of the interlayer stacking and chalcogen interactions on the electronic and superconducting properties of multilayered TMDs under hydrostatic strain environments.

Direct visualization of a two-dimensional topological insulator in the single-layer 1T′−WTe2

We have grown nearly freestanding single-layer

Sintering temperature-dependent magnetism and structure in granular perovskites La1−xSrxMnOz

1{T}^{ensuremath{}}ensuremath{-}mathrm{WT}{mathrm{e}}_{2}

Pressure-induced metallization and superconducting phase in ReS 2

on graphitized

DIFFERENTIAL CONDUCTANCE OF NORMAL METAL-INSULATOR-D-WAVE SUPERCONDUCTOR JUNCTIONS WITH INTERFACE ROUGHNESS

6H

High-pressure phases of Weyl semimetals NbP, NbAs, TaP, and TaAs

-SiC(0001) by using molecular beam epitaxy (MBE), and characterized its electronic structure with scanning tunneling microscopy/spectroscopy (STM/STS). The existence of topological edge states at the periphery of single-layer

Strain-induced quantum topological phase transitions in Na3Bi

mathrm{WT}{mathrm{e}}_{2}

Magnetization jumps in a lead-porous glass composite: Experiment and simulation

islands was confirmed. Surprisingly, a bulk band gap at the Fermi level and insulating behaviors were also found in single-layer

Interfacial tunnel-type GMR in granular perovskite La-Sr-Mn-O system

mathrm{WT}{mathrm{e}}_{2}