Quantum Oscillations in Noncentrosymmetric Weyl Semimetal SmAlSi

As a new type of quantum state of matter hosting low energy relativistic quasiparticles, Weyl semimetals(WSMs)have attracted significant attention for scientific community and potential quantum device applications. In this study, we present a comprehensive investigation of the structural, magnetic, and transport properties of noncentrosymmetric RAl Si(R = Sm, Ce), which have been predicted to be new magnetic WSM candidates. Both samples exhibit nonsaturated magnetoresistance, with about 900% and...     

Pressure-Induced Topological and Structural Phase Transitions in an Antiferromagnetic Topological Insulator

Recently,natural van der Waals heterostructures of(MnBi₂ Te₄)_m(Bi₂ Te₃)_n have been theoretically predicted and experimentally shown to host tunable magnetic properties and topologically nontrivial surface states.We systematically investigate both the structural and electronic responses of MnBi₂ Te₄ and MnBi₄ Te₇ to external pressure.In addition to the suppression of antiferromagnetic ord...     

多孔聚苯醚的合成及气体储存

通过厄尔曼缩合反应合成了一种具有dia-c5 拓扑结构的多孔聚苯醚JUC-Z6, 并对其结构进行了表征. 结果表明, 该化合物具有高热稳定性(214℃ 失重5%), 高化学稳定性、 高BET比表面积(192 m²/g)及窄孔径分布(1.36 nm). 低压气体吸附测试结果表明, JUC-Z6在多孔材料中具有较高的吸附焓(氢气4.1 kJ/mol, 二氧化碳33.7 kJ/mol, 甲烷4.1 kJ/mol).     

Pressure-Induced Superconductivity in the Charge-Density-Wave Compound LaTe2-xSbx(x=0 and 0.4)

Magnetic CeTe₂ achieving superconductivity under external pressure has received considerable attention.The intermingling of 4f and 5d electrons from Ce raised the speculation of an unconventional pairing mechanism arising from magnetic fluctuations.Here,we address this speculation using a nonmagnetic 4f-electron-free LaTe₂as an example.No structural phase transition can be observed up to 35 GPa in the in situ synchrotron diffraction patterns.Subsequent high-pressure electri...     

羟基官能化共价有机骨架化合物的设计合成及性质

本文设计并合成了一个具有共价有机骨架微孔结构的聚三（4-苯基）硅醇化合物。该化合物是利用乌尔曼反应,三（4-溴苯基）硅醇自聚合得到的。通过MAS NMR,FTIR,SEM,PXRD对化合物结构进行了表征。并通过TGA及氮气吸附表征化合物热稳定性及孔性质。该化合物具有高热稳定性（467 ℃失重5%）,高化学稳定性,高BET比表面积（739 m2g-1）及很窄的孔径分布（1.27 nm）。