Understanding how electrons form pairs in the presence of strong electron correlations demands going beyond the BCS paradigm.We study a correlated superconducting model where the correlation effects are accounted for by a U term local in momentum space.Th
We study the Goos-H?nchen-like shift of single silicene barrier under the external perpendicular electric field,off-resonant circularly polarized light and the exchange field modulation using the stationary-phase method.The results show that the Goos-H?nc
First-principles calculations and Monte Carlo simulations reveal that single-layer and double-layer VX2(X=Cl,Br)can be tuned from antiferromagnetic(AFM)semiconductors to ferromagnetic(FM)state when biaxial tensile stress is applied.Their ground states are
It is known that ion channel can effectively limit the radial expansion of an artificial electron beam during its long-range propagation in the space plasma environment.Most prior studies discussed the focusing characteristics of the beam in the ion chann
The thickness dependent spin-orbit torque(SOT)in an L10-FePt single layer is investigated in this work.As the thickness increases from 8 nm to 16 nm,the magnetization switching ratio in the L10-FePt film with higher chemical ordering becomes smaller.It is
We report magnetization and Raman spectroscopy study on single crystals of VOC1,a van der Waals antiferromag-netic material.Magnetization measurement confirms an antiferromagnetic transition at 79 K and a magnetic easy axis along crystallographic a direct
天然产物是大自然馈赠给人类最宝贵的财富之一,是维持人类繁衍与保障健康的重要守护神.人类在与自然灾害和疾病抗争过程中,从懵懂的生存欲望、健康的嗜好中发现并总结了具有一定生理功能的天然小分子物质,它们大多是植物和微生物的次级代谢产物.8000年前人类就已种植罂粟用于观赏和治病,19世纪初从罂粟中分离出的活性天然产物——吗啡,成为人类将纯单体天然化合物用作药物的里程碑式标志.在中国,植物入药保健康已有2000多年的历史.20世纪60年代,屠呦呦等从中医古籍中获得灵感,终于发现了具有抗疟活性的青蒿素.天然产物分子
The 0.6 at.％Pr3+-doped CaF2-YF3 crystal was successfully grown by the temperature gradient technique(TGT).X-ray diffraction analysis showed that the grown crystal still had cubic structure.The absorption spectrum,emission spectrum,Judd-Ofelt analysis and
A scheme of combing wave absorption and phase cancellation mechanisms for widening radar cross section(RCS)reduction band is proposed.An absorptive coding metasurface implementing this scheme is derived from traditional circuit analog absorber(CAA)compose
Theories and experiments on dirty superconductors are complex but important in terms of both theoretical fundamen-tals and practical applications.These activities are even more challenging when magnetic fields are present because the field distribution,el