Multiple magnetism-controlled topological states in EuAgAs

Field-controlled quantum anomalous Hall effect in electron-doped CrSiTe3 monolayer

“…The presence of robust magnetism in two-dimensional system like CrBTe 3 becomes even more interesting in the study of topological properties [15][16][17][18][19][20][21][22][23][24] , where TMC materials has been recently considered as one of good platform of researching topological phases of matters 25,26 and magnetism can be employed as a control knob to tune topological properties in such systems [27][28][29] . Specifically, quantum anomalous Hall effect (QAHE) can be observed in materials with magnetic ordering and sizable band gap, showing quantized integer Hall conductivity in the absence of external magnetic fields.…”

Discovery of Topological Magnetic Textures near Room Temperature in Quantum Magnet TbMn6Sn6

“…On the other hand, several theories have predicted a variety of topological phases by rotating the magnetization in these materials. [18][19][20] It is interesting to note that the competition between the interlayer interaction and the anisotropy energy between the R and Mn sublattices in RMn 6 Sn 6 is temperature dependent, which accounts for the gradual spin reorientation transition (SRT) between out-of-plane and in-plane magnetization near room temperature. [21,22] Therefore, the SRT provides a promising route to tune the electronic band topology in the Kagome materials, such as TbMn 6 Sn 6 , which we will explore in this project.…”

Ideal nodal-net, nodal-chain, and nodal-cage phonons in some realistic materials

“…Compared to TIs, TSMs host gapless bulk phases. Researchers have presented many TSMs 27–40 with different dimensionalities, degeneracies, and connection patterns of band crossings. Nodal-line semimetals (NLSMs) 41–53 are one type of TSMs that has attracted widespread interest.…”