Collaborative Research: High-Q Magnon Crystals and Emergent Topological Phases

合作研究：高Q磁振子晶体和涌现拓扑相

• 批准号: 1808704
• 负责人: Ezekiel Johnston-Halperin
• 金额: $ 38.99万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2023-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1808704&HistoricalAwards=false
• 关键词: Collaborative; Research; Magnon; Crystals; Emergent

Non-Technical Description: Magnetic materials have a long history of successful integration with high frequency electronics dating back to the invention of the radio and continuing through the present day in cell phones and other wireless communication technologies. Given this central role, it is unfortunate that our choice of materials is significantly limited by the fact that magnetic materials in nature are exceedingly rare and our ability to predict which new materials will have targeted magnetic properties is limited. This project fills that gap by employing the strategy of "materials by design" to predict and produce high quality magnetic materials that enable next-generation microwave technologies. The envisioned materials form high quality "magnetic spray paints" that can be patterned onto nearly any surface, enabling accurate micro-scale patterning for materials engineering. Down-stream technological benefits range from more power efficient microwave electronics to the potential to contribute to the development of quantum computing and quantum communication. This work helps grow our economy in the fast-moving technology sector by establishing a leadership role for the US in these emerging fields and by training students in the new techniques and new knowledge necessary to succeed in the competitive international landscape of science and innovation.Technical Description: This project exploits the ability to engineer highly coherent magnon (spin-wave) excitations in the organic-based ferrimagnet vanadium tetracyanoethylene to explore magnonic phases ranging from dilute gasses of magnon atoms (isolated magnetic micro/nanostructures) and magnon molecules (coherently coupled magnon atoms), to magnon crystals (coherently coupled arrays of atomic/molecular magnon building blocks). For example, the PIs are investigating exotic phases such as topologically protected modes in magnon crystals whose symmetry and structure are based on deterministic materials design and microscale fabrication/synthesis. This work is a joint theory/experiment collaboration, and employs both cavity and broad-band ferromagnetic resonance and magnetothermal transport measurements as well as numerical modeling and prediction of the relevant magnonic states. Both PIs have a strong track record of mentoring at all levels, and are leveraging that commitment and expertise during this program to provide an interdisciplinary and collaborative environment for the training of 3 PhD students. This research advances the field of coherent magnonics and provides a deeper understanding of the role of topology in creating and preserving coherent excitations with implications for applications ranging from next generation microwave electronics to quantum information systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术描述：磁性材料与高频电子设备的成功整合具有悠久的历史，可追溯到无线电的发明，并继续在当今的手机和其他无线通信技术中继续进行。鉴于这种核心作用，不幸的是，我们对材料的选择受到了这一事实极为罕见的事实，并且我们预测哪些新材料将具有靶向磁性的能力受到限制。该项目通过采用“通过设计材料”的策略来预测和生产能够实现下一代微波技术的高质量磁性材料来填补这一空白。所设想的材料形成了高质量的“磁性喷漆”，可以将其图案化为几乎任何表面，从而使材料工程的精确微型图案化。下游技术收益范围从更有效的微波电子设备到有助于量子计算和量子通信的发展的潜力。 This work helps grow our economy in the fast-moving technology sector by establishing a leadership role for the US in these emerging fields and by training students in the new techniques and new knowledge necessary to succeed in the competitive international landscape of science and innovation.Technical Description: This project exploits the ability to engineer highly coherent magnon (spin-wave) excitations in the organic-based ferrimagnet vanadium tetracyanoethylene to explore元音相，从镁原子（分离的磁性微/纳米结构）和镁分子（相干耦合的镁原子）到镁晶体（相干耦合原子/分子镁基块）等元相。例如，PI正在研究外来阶段，例如镁晶体中的拓扑保护模式，其对称性和结构基于确定性材料设计和显微镜制造/合成。这项工作是一种联合理论/实验协作，同时采用了空腔和宽带铁磁共振，以及磁透光传输测量以及相关宏伟状态的数值建模和预测。这两个PI在各个层面上都有很强的指导记录，并利用该计划中的承诺和专业知识为培训3个博士学位学生提供跨学科和协作环境。这项研究促进了连贯的镁化领域，并更深入地了解了拓扑在创造和保存连贯的兴奋中的作用，对从下一代微波电子设备到量子信息系统的应用都具有影响。这奖反映了NSF的法规任务，并被认为是通过基金会的智力优点和广阔的范围来评估的，并且值得通过评估来进行评估。

项目成果

Probing the structure of vanadium tetracyanoethylene using electron energy-loss spectroscopy

• DOI: 10.1063/5.0087997
• 发表时间: 2022-08
• 期刊: APL Materials
• 影响因子: 6.1
• 作者: Amanda H. Trout;S. Kurfman;Yueguang Shi;M. Chilcote;M. Flatté;E. Johnston-Halperin;D. McComb

Exploring a quantum-information-relevant magnonic material: Ultralow damping at low temperature in the organic ferrimagnet V[TCNE] x

探索与量子信息相关的磁子材料：有机亚铁磁体 V[TCNE] x 低温下的超低阻尼

• DOI: 10.1116/5.0044193
• 发表时间: 2021
• 期刊: AVS Quantum Science
• 作者: Yusuf, H.;Chilcote, M.;Candido, D. R.;Kurfman, S.;Cormode, D. S.;Lu, Y.;Flatté, M. E.;Johnston-Halperin, E.
• 通讯作者: Johnston-Halperin, E.