Controllable nucleation and deformation of skyrmions on surface of magnetic nanotubular monolayer  

作　　者：Xin-Xin Zhang Chen-Yu Zhang Yi-Xin Xing Chao Man Jiao Liu Yong Hu 

机构地区：[1]Department of Physics,College of Sciences,Northeastern University,Shenyang 110819,China [2]School of Materials and Mineral Resources Engineering,Universiti Sains Malaysia,Engineering Campus,14300 Nibong Tebal,Penang,Malaysia [3]State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang110819,China

出　　处：《Rare Metals》2024年第7期3250-3259,共10页稀有金属（英文版）

基　　金：financially supported by the Key Program of National Natural Science Foundation of China-Regional Innovation and Development Joint Fund (No.U22A20117);the Natural Science Foundation of Liaoning Province (No.2022-MS108);the Fundamental Research Funds for Central Universities (No.N2205015)。

摘　　要：Magnetic skyrmions emerge when the energy of ferromagnetic exchange interaction promoting parallel alignment of spins enters in competition with energies favoring non-collinear alignment of spins such as Dzy aloshinskii-Moriya interaction(DMI),long-rang dipole-dipole interaction(DDI),or higher-order exchange interactions.We perform an unbiased Monte Carlo simulation to study the DMI-based skyrmion nucleation and stabilization on the surface of magnetic nanotubular monolayer controlled by tuning constants of DDI(g) and next-nearest-neighbor antiferromagnetic exchange interaction(j') with appropriate balance.Without g and j',the loosely distributed skyrmions initially nucleate on the surface of nanotube approaching to the magnetic field(h) direction with increasing h in the intermediate range.Then,the skyrmion size,shape,density,distribution and crystal structure,as well as its driven field range,are tailored by g and j'.This work demonstrates the skyrmion nucleation mechanisms in three-dimensional magnetic nanostructures with curvature effect and multiple interactions,serving as a benchmark for a guide to experimentalists for preparation of samples in magnetic skyrmion states.

关 键 词：Magnetic nanotube Magnetic skyrmion Dzyaloshinskii-Moriya interaction Dipole-dipole interaction Monte Carlo simulation 

分 类 号：O469[理学—凝聚态物理] TB383.1[理学—电子物理学]