We study the RKKY Heisenberg model on a three-dimensional stacked-triangular lattice under magnetic fields by extensive Monte Carlo simulations to get insight into chiral-degenerate symmetric skyrmion crystal (SkX) in centrosymmetric metallic magnets. The triple-$q$ SkX state and double-$q$ states are realized, together with single-$q$ state. find an unexpected phenomenon of replica-symmetry br...

Conventionally, theoretical considerations in electron microscopy employ the weak phase approximation (WPA), which is only valid for scattering atomic elements (C, B, N) but not transition metal dichalcogenide (TMD) materials. This leads to many exciting phenomena being overlooked. The present study goes beyond and thus obtained results can be applied two-dimensional (2D) crystals made of weakl...

Over the last few years, broken symmetry within crystals has attracted extensive attention since it can improve control of light propagation. In particular, low-symmetry Bravais crystal support shear polaritons which great potential in thermal photonics. this work, we report a twist-induced near-field system based on medium (\b{eta}-Ga2O3). The radiation (NFTR) between such slabs is nearly four...