【摘 要】
：
The surface magnetic property plays a key role in determining the magnetic related quantum phenomenonof magnetic topological insulators.Using spin-polarized
【机 构】
：
KeyLaboratoryofArtificialStructuresandQuantumControl(MinistryofEducation),DepartmentofPhysics,Shangh
论文部分内容阅读
The surface magnetic property plays a key role in determining the magnetic related quantum phenomenonof magnetic topological insulators.Using spin-polarized scanning tunneling microscopy,we investigated the surface magnetic properties of Cr doped topological insulator-Cr0.05Sb1.95Te3.It was found that the topological surface states of Cr0.05Sbl.95Te3 are spin polarized in the surfaceplane while the bulk shows ferromagnetism with an out-of-plane easy axis.The upper and lowerbranch of helical Dirac cone harbors opposite spin polarization and the polarization at Diracpoint is zero.Our results show the complexity of surface magnetism of magnetic doped topologicalinsulators.
其他文献
Motivated by the advancement of silicene in experiment, we engineer the magnetic properties and band gap in silicene-based nanostructures.We find that (i) T
MoS2,一个层状的准二维硫化物材料[1],它的电学[2]和光学[3]的特性一直备受人们的关注.尤其是单层的硫化钼是直接带隙半导体,在发光领域将得到很好应用.我们的单层和多层
In this talk, we shall present results of epitaxial growth of single domain Bi2Se3(111) films by molecular-beam epitaxy and unveil the roles played by the l
石墨烯具有极高的载流子迁移率和光透过率以及良好的导电性,在太阳能电池领域有着广泛的应用前景,受到人们的普遍关注.石墨烯-硅肖特基结太阳电池[1]利用石墨烯与n型硅接触形
本文主要介绍我们小组在拓扑绝缘体薄膜输运方面的最近的一些研究成果.拓扑绝缘体表面态由于自旋和轨道锁定所具有的 Berry相位会抑制电子的背散射,从而带来反弱局域效应.
作为未来的一个发展方向,硅基单片光电集成与硅光子学一直是一个受人关注的研究领域,近年来在各个方面都取得了迅速的发展,但目前仍然存在的一个最大的挑战就是如何实现高效
在针尖电极与平板电极(简称针—板电极)构成的电极结构上施加直流电压,可以形成极不均匀的电场,并且在针尖处产生的电场最强.理论上,如果针尖尺寸趋近无穷小,针尖处的电场强
近年来,由钙钛矿结构氧化物形成的异质结,因表现出众多新奇的物理效应和在新型光电子器件应用方面的前景,引起了人们广泛的关注[1].
The g-factor |g*| is an important physical quantity related to spin characteristics of electron.It can be controlled by a gate voltage.
由闪锌矿晶体结构Ⅱ-Ⅵ族化合物半导体CdTe与盐岩矿晶体结构的Ⅳ-Ⅵ族化合物半导体PbTe构成的CdTe/PbTe异质结构,具有共同Te阴离子、晶格常数匹配和物理属性独特等特点,CdTe/