Electronic phase separation in the itinerant metamagnetic transition of Sr₄Ru₃O₁₀

2004/06/18 by Zhiqiang Mao, Meng Zhou, Mao, Zhiqiang +9
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/0406439

openalex publication_date 2004/06/18 · arxiv created 2005/05/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Triple-layered ruthenate Sr₄Ru₃O₁₀ shows a first-order itinerant metamagnetic transition for in-plane magnetic fields. Our experiments revealed rather surprising behavior in the low-temperature transport properties near this transition. The in-plane magnetoresistivity ρ_ab(H) exhibits ultrasharp steps as the magnetic field sweeps down through the transition. Temperature sweeps of ρ_ab for fields within the transition regime show non-metallic behavior in the up-sweep cycle of magnetic field, but show a significant drop in the down-sweep cycle. These observations indicate that the transition occurs via a new electronic phase separation process; a lowly polarized state is mixed with a ferromagnetic state within the transition regime.

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