Effect of spin fluctuations on the thermodynamic and transport properties of the itinerant ferromagnet CoS2
作者： M. Otero-Leal , F. Rivadulla , M. García-Hernández , A. Piñeiro , V. Pardo
DOI: 10.1103/PHYSREVB.78.180415
关键词: Specific heat 、 Spin-½ 、 Ferromagnetism 、 Magnetic phase transition 、 Condensed matter physics 、 Tricritical point 、 Electrical resistivity and conductivity 、 Crystallite 、 Physics
摘要: Through a detailed study of the specific heat, resistivity, and susceptibility under pressure in polycrystalline single-crystal CoS 2, we demonstrate that thermodynamic transport properties this system are governed by spin-density fluctuations. We give correct (P,T) coordinates its tricritical point discuss origin first-order magnetic phase transition system. Our results highlight importance having clean single crystals order to extract definitive conclusions about intrinsic itinerant weak ferromagnets. © 2008 The American Physical Society.
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