Impact of orbital hybridization on spin-polarized electronic transport through Ni-MAPbI3 interfaces

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-09-10 DOI:10.1063/5.0222322

Xiangpeng Zhang, Wei Li, Yang Li, Linze Jiang, Xixiang Zhu, Haomiao Yu, Jinpeng Li, Yumeng Shi, Ding Yi, Kai Wang

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引用次数: 0

Abstract

The solution-processed methylammonium lead tri-iodine (MAPbI3), with long spin lifetimes and large spin diffusion lengths, has merit for developing stable perovskite spin valves (PeSV) with low saturation fields. By far, it remains challenging to avoid ill-defined ferromagnet-MAPbI3 interfaces during device fabrications using solution methods and to quantify the hybridized interfacial electronic and magnetic structures. Herein, an annealing-free method was developed for the fabrication of MAPbI3 based PeSV. In comparison to a thermally annealed device, an improved room temperature magnetoresistance (MR) was achieved. We found remarkable interfacial contributions to anisotropic magnetoresistance and MR. The first-principles calculation was further adopted to quantify the interfacial spin and orbital moments. Our results suggest that the orbital hybridization and the spin transfer are remarkable for the formation of the spin-dependent interfacial density of states. It consequently affects magnetic switching behaviors. This study holds an exceptionally important role for a deep understanding of the spin-polarized electronic transport through the Ni-MAPbI3 hybridized interface.

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轨道杂化对通过 Ni-MAPbI3 界面的自旋极化电子传输的影响

溶液加工的甲基三碘化铅铵（MAPbI3）具有长自旋寿命和大自旋扩散长度，在开发具有低饱和场的稳定过氧化物自旋阀（PeSV）方面具有优势。迄今为止，在使用溶液方法制造器件的过程中，如何避免铁磁体-MAPbI3 界面不清晰，以及如何量化杂化界面的电子和磁性结构，仍然是一项挑战。在此，我们开发了一种用于制造基于 MAPbI3 的 PeSV 的无退火方法。与热退火设备相比，该设备的室温磁阻（MR）得到了改善。我们发现了界面对各向异性磁阻和磁阻的显著贡献。我们进一步采用第一原理计算来量化界面自旋和轨道力矩。我们的结果表明，轨道杂化和自旋转移对形成自旋相关的界面态密度具有显著作用。因此，它会影响磁开关行为。这项研究对于深入理解通过 Ni-MAPbI3 杂化界面的自旋极化电子传输具有极其重要的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.