超声注入FeTiO3的大磁Bragg峰增强

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-09-29 DOI:10.1063/5.0273424

Shin-ichi Shamoto, Kwangwoo Shin, Mitsuhiro Akatsu, Masaki Imai, Daichi Ueta, Tetsuya R. Yokoo, Yuichi Nemoto, Amer M. A. Hassan, Lieh-Jeng Chang, Jun'ichi Ieda, Jae-Ho Chung

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引用次数: 0

摘要

FeTiO3是一种含有Fe2+的钛铁矿反铁磁绝缘体，具有沿c轴反铁磁堆积的二维铁磁蜂窝层。在低温条件下，FeTiO3晶体的磁Bragg峰强度在超声作用下提高了300%。明显的增强归因于FeTiO3中Fe2+的强自旋-晶格耦合。这一效应在35 K以上就消失了，表明自旋轨道耦合引起的Fe2+能级的能量分裂约为35 K。这一发现为高效的声学自旋泵提供了一条有希望的途径。

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Large magnetic Bragg peak enhancement by ultrasound injection on FeTiO3

FeTiO3 is an ilmenite antiferromagnetic insulator containing Fe2+, with two-dimensional ferromagnetic honeycomb layers antiferromagnetically stacked along the c-axis. The magnetic Bragg peak intensity is found to be enhanced under the application of ultrasound up to 300% in FeTiO3 crystals at low temperatures. The pronounced enhancement is attributed to strong spin–lattice coupling of Fe2+ in FeTiO3. This effect disappears above 35 K, suggesting that the energy splitting of Fe2+ levels induced by spin–orbit coupling is about 35 K. This finding suggests a promising pathway toward high efficiency acoustic spin pumping.

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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.