Scaling Study and Thermodynamic Properties of the cubic Helimagnet FeGe

Abstract

The critical behavior of the cubic helimagnet FeGe was obtained from isothermal magnetization data in very close vicinity of the ordering temperature. A thorough and consistent scaling analysis of these data revealed the critical exponents $\beta =0.368$, $\gamma =1.382$, and $\delta =4.787$. The anomaly in the specific heat associated with the magnetic ordering can be well described by the critical exponent $\alpha =-0.133$. The values of these exponents corroborate that the magnetic phase transition in FeGe belongs to the isotropic 3D-Heisenberg universality class. The specific heat data are well described by ab initio phonon calculations and confirm the localized character of the magnetic moments.

arXiv comment10 pages, 8 figures

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• Confinement of Chiral Magnetic Modulations in the Precursor Region of FeGe
• First order transition from correlated electron semiconductor to ferromagnetic metal in single crystalline FeSi1-xGex
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• Structural investigations on $\epsilon$-FeGe at high pressure and low temperature
• Electronic structure and magnetism for FeSi${}_{(1-x)}$Ge${}_x$ from supercell calculations

Cited by in corpus (10)

• Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscopy
• Thermoelectricity in correlated narrow-gap semiconductors
• Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe${}_{1-y}$Co${}_y$Ge films
• Tricritical point and phase diagram based on critical scaling in monoaxial chiral helimagnet Cr1/3NbS2
• Crossover of skyrmion and helical modulations in noncentrosymmetric ferromagnets
• Skyrmion Topological Hall Effect near Room Temperature
• Spin-wave dynamics in FeGe helimagnet: studied by small-angle neutron scattering
• Topological spin dynamics in cubic FeGe near room temperature
• Ab initio study of noncentrosymmetric transition-metal monogermanide B20-RhGe synthesized at high temperature and pressure
• Enhanced skyrmion metastability under applied strain in FeGe