title: Critical phenomenon of the near room temperature skyrmion material FeGe.
abstract: The cubic B20 compound FeGe, which exhibits a near room temperature skyrmion phase, is of great importance not only for fundamental physics such as nonlinear magnetic ordering and solitons but also for future application of skyrmion states in spintronics. In this work, the critical behavior of the cubic FeGe is investigated by means of bulk dc-magnetization. We obtain the critical exponents (β = 0.336 ± 0.004, γ = 1.352 ± 0.003 and β = 5.276 ± 0.001), where the self-consistency and reliability are verified by the Widom scaling law and scaling equations. The magnetic exchange distance is found to decay as r(-4.9), which is close to the theoretical prediction of 3D-Heisenberg model (r(-5)). The critical behavior of FeGe indicates a short-range magnetic interaction. Meanwhile, the critical exponents also imply an anisotropic magnetic coupling in this system.
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.|University of Science and Technology of China, Hefei 230026, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Han
authors.affiliation: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.
authors.forename: Min
authors.initials: M
authors.lastname: Ge
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Haifeng
authors.initials: H
authors.lastname: Du
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Chiming
authors.initials: C
authors.lastname: Jin
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Wensen
authors.initials: W
authors.lastname: Wei
authors.affiliation: Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Jiyu
authors.initials: J
authors.lastname: Fan
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Changjin
authors.initials: C
authors.lastname: Zhang
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.|Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.
authors.forename: Li
authors.initials: L
authors.lastname: Pi
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.|Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.
authors.forename: Yuheng
authors.initials: Y
authors.lastname: Zhang