Magnetotransport Properties of La(Fe1-xSix)13 Compounds

IF 1.6 4区物理与天体物理 Q3 PHYSICS, APPLIED

Journal of Superconductivity and Novel Magnetism Pub Date : 2025-02-25 DOI:10.1007/s10948-025-06941-8

Kosuke Tanabe, Yuji Ueno, Hirofumi Wada

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引用次数: 0

Abstract

Ternary La(Fe_1-xSi_x)₁₃ compounds undergo a first-order magnetic transition at the Curie temperature T_C. Above T_C, the compounds exhibit the itinerant electron metamagnetism. We have studied Hall effect and thermal conductivity of La(Fe_1-xSi_x)₁₃. The Hall resistivity was measured as a function of the magnetic field B at various temperatures. Using the magnetization data, we separated the normal Hall effect (NHE) and the anomalous Hall effect (AHE) in the ferromagnetic state. It is found that NHE is positive at low temperatures, while it becomes negative near T_C. The large AHE was observed for x = 0.12. Our analyses revealed that the skew scattering is dominant in the AHE. The temperature dependence of thermal conductivity λ exhibits a peak at T_C for x = 0.12 and 0.14, while abrupt reduction in λ was observed at T_C for x = 0.10 both on cooling and on heating. We discuss the physical origins of these anomalies in the transport properties of La(Fe_1-xSi_x)₁₃.

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来源期刊

Journal of Superconductivity and Novel Magnetism 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.10%

发文量

342

审稿时长

3.5 months

期刊介绍： The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.