近道半导体Ce1-xLaxOs2Al10中4f孔掺杂的μSR研究

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

Physica B-condensed Matter Pub Date : 2025-05-11 DOI:10.1016/j.physb.2025.417379

Noraina Adam , Saidah Sakinah Mohd Tajudin , Retno Asih , Dita Puspita Sari , Adroja Devashibai , Toshiro Takabatake , Mohamed Ismail Mohamed Ibrahim , Shukri Sulaiman , Isao Watanabe

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引用次数: 0

摘要

对AFM近道半导体（Ce1-xLax）Os2Al10 （x = 0.1, 0.2, 0.3, 0.4, 0.5）的多晶样品进行了零场（ZF）和横场(TF) μ子自旋弛豫（μSR）测量，直至2k，以确定其长程磁序，并观察了磁转变温度T0。TF μ sr测量结果表明，随着la掺杂比例从10%增加到50%，Ce的磁性贡献减小。然而，ZF-μSR数据显示，只有在（Ce1-xLax）Os2Al10 （x = 0.1, 0.2, 0.3）中频率振荡低于T0，证实了ce矩的长程磁有序。在（Ce1-xLax）Os2Al10 （x = 0.4, 0.5）的情况下，ZF-μSR光谱在2 K以下没有显示出介子自旋进动，这可能表明需要不同的实验装置才能观察到它。

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μSR study on the 4f-hole doping in the Kondo semiconductor Ce1-xLaxOs2Al10

We examined the zero-field (ZF) and transverse-field (TF) muon spin relaxation (μSR) measurement on the polycrystalline sample of the AFM Kondo semiconductors (Ce_1-xLa_x)Os₂Al₁₀ (x = 0.1, 0.2, 0.3, 0.4, 0.5) down until 2 K to confirm the long range magnetic order and observing the magnetic transition temperature, T₀. The TF-μSR measurements suggested a decreasing magnetic contribution from Ce as the percentage of La-doped increased from 10 % to 50 %. However, the ZF-μSR data showed a frequency oscillations below T₀ only in (Ce_1-xLa_x)Os₂Al₁₀ (x = 0.1, 0.2, 0.3) and confirms the long-range magnetic ordering of the Ce-moment. In the case of (Ce_1-xLa_x)Os₂Al₁₀ (x = 0.4, 0.5), the ZF-μSR spectra showed no muon spin precession down to 2 K which possibly suggests that it needs a different experimental setup in order to observe it.

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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