Visualization of tunnel magnetoresistance effect in single manganite nanowires

• 来源期刊: 中国物理B（英文版）
• 关键词: manganite nanowires tunnel magnetoresistance magnetic force microscope
• 年，卷（期）: 2020,（1）
• 页码范围: 114-118
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-1056/ab5932

摘要

We reported a study of tunnel magnetoresistance (TMR) effect in single manganite nanowire via the combination of magnetotransport and magnetic force microscopy imaging. TMR value up to 290％ has been observed in single (La1-yPry)1-xCaxMnO3 nanowires with varying width. We find that the TMR effect can be explained in the scenario of opening and blockade of conducting channels from inherent magnetic domain evolutions. Our findings provide a new route to fabricate TMR junctions and point towards future improvements in complex oxide-based TMR spintronics.