Effect of spin fluctuations on magnetoresistance and anomalous Hall effect in the chiral magnet Co8Zn8Mn4

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-02-22 DOI:10.1016/j.physb.2025.417035

P. Saha, P. Das, M. Singh, R. Rai, S. Patnaik

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引用次数: 0

Abstract

The

β

-Mn type cubic Co-Zn-Mn compounds have received significant attention recently due to their ability to host skyrmions at room temperature. The objective of this study is to thoroughly investigate the magnetotransport properties of one member of the family (Co₈Zn₈Mn₄) and delineate the role played by different scattering mechanism in the presence of magnons and spin fluctuations. A negative magnetoresistance is observed over a wide temperature range of 55 K to 300 K. The deviation of isothermal magnetoresistance curves from linearity to non-linearity, points towards the transition from the dominance of magnons to spin fluctuations. The relationship between the anomalous Hall effect and longitudinal resistivity is studied. It reveals the dominance of skew scattering mechanism. We experimentally determine that the spin fluctuations dictate the skew-scattering mechanism in Co₈Zn₈Mn₄. Our findings shed light on the microscopic origin of magnetotransport in skyrmionic compounds.

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces