Journal
PHYSICAL REVIEW B
Volume 94, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.144424
Keywords
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Funding
- DFG Projects [RO 2238/9-1, GR 3498/3-2 (SPP1599)]
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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.
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