Toward room-temperature nanoscale skyrmions in ultrathin films

作     者：Anastasiia SVarentcova Stephan von Malottki Maria N.Potkina Grzegorz Kwiatkowski Stefan Heinze Pavel F.Bessarab 

作者机构：ITMO UniversitySt.Petersburg 197101Russia Science InstituteUniversity of IcelandReykjavík 107Iceland Kavli Institute of NanoscienceDelft University of TechnologyP.O.Box 4056Delft 2600 GAThe Netherlands Institute of Theoretical Physics and AstrophysicsUniversity of KielLeibnizstrasse 15Kiel 24098Germany St.Petersburg State UniversitySt.Petersburg 198504Russia Peter Grünberg Institute and Institute for Advanced SimulationForschungszentrum JülichJülich 52425Germany 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2020年第6卷第1期

页      面：58-68页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070201[理学-理论物理] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：This work was funded by the Russian Science Foundation(Grant no.17-72-10195) the Icelandic Research Fund(Grants nos.163048-053,185409-052,and 184949-052) the University of Iceland Research Fund,the European Union’s Horizon 2020 Research and Innovation Program under Grant agreement no.665095(FET-Open project MAGicSky) the Alexander von Humboldt Foundation 

主　　题：conditions stability films 

摘      要：Breaking the dilemma between small size and room-temperature stability is a necessary prerequisite for skyrmion-based information *** we demonstrate by means of rate theory and an atomistic spin Hamiltonian that the stability of isolated skyrmions in ultrathin ferromagnetic films can be enhanced by the concerted variation of magnetic interactions while keeping the skyrmion size *** predict film systems where the lifetime of sub-10 nm skyrmions can reach years at ambient conditions.