Understanding quantum emergent phenomena in Shastry-Sutherland model systems

了解 Shastry-Sutherland 模型系统中的量子涌现现象

• 批准号: 2327555
• 负责人: Sara Haravifard
• 金额: $ 56.5万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-04-01 至 2027-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2327555&HistoricalAwards=false
• 关键词: Understanding; quantum; emergent; phenomena; Shastry

Non-Technical Abstract:Magnetic frustrated systems offer a captivating exploration of physics, where diverse forces prevent the formation of a simple magnetically ordered pattern, leading to various quantum states, from exotic spin patterns to superconductors. The Shastry-Sutherland Lattice (SSL) model plays a crucial role in interpreting quantum magnetism, offering insights into transitions under different conditions, such as pressure and magnetic field, resulting in the formation of novel magnetic patterns. Understanding these phenomena isn't just about uncovering the mysteries of the universe; it's about shaping the future of technology, as in the realm of spintronics, where these insights can drive innovative advancements. For instance, leveraging the principles of spintronics can enable the development of more efficient electronic devices. This could mean faster and more energy-efficient computers, as well as improved communication devices, significantly enhancing the way we connect and process information. Inspired by SSL model breakthroughs, this proposal suggests exploring a new family of similar compounds to deepen our understanding and propel technological progress. The project focuses on practical research, including synthesizing materials, conducting experiments to measure thermodynamic properties, and employing advanced scattering techniques for further insights. Beyond the scientific aspects, the project places emphasis on education, involving graduate and undergraduate students and fostering diversity in science. Collaboration between different institutions is actively encouraged, promoting participation in educational programs and internships to contribute to the broader scientific community.Technical Abstract: The initial realization of the Shastry-Sutherland Lattice (SSL) model in SrCu2(BO3)2 (SCBO) unveils a complex phase diagram, particularly in the study of magnetization plateaus under high magnetic fields and the potential hosting of topological triplons. However, understanding these emergent states in SCBO poses challenges due to technical experimental obstacles, such as the need for high magnetic fields and high pressures at low temperatures. In response, this research focuses on a new rare-earth-based SSL model family of compounds, allowing for more accessible investigations of field- and pressure-induced phenomena. The research plan includes synthesis, in-house thermodynamics measurements, and advanced spectroscopy experiments in collaboration with national user facilities. Ongoing collaboration with expert theorists provides crucial analysis and interpretation of the experimental results.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.

非技术摘要：磁阻系统提供了一种令人着迷的物理学探索，其中不同的力阻止简单的磁有序图案的形成，从而导致各种量子态，从奇异的自旋图案到超导体。 Shastry-Sutherland 晶格 (SSL) 模型在解释量子磁性方面发挥着至关重要的作用，可以深入了解压力和磁场等不同条件下的转变，从而形成新颖的磁性模式。理解这些现象不仅仅是揭开宇宙的奥秘，更是揭开宇宙的奥秘。它是关于塑造技术的未来，就像在自旋电子学领域一样，这些见解可以推动创新进步。例如，利用自旋电子学原理可以开发更高效的电子设备。这可能意味着更快、更节能的计算机以及改进的通信设备，从而显着增强我们连接和处理信息的方式。受 SSL 模型突破的启发，该提案建议探索一系列新的类似化合物，以加深我们的理解并推动技术进步。该项目侧重于实际研究，包括合成材料、进行测量热力学性质的实验以及采用先进的散射技术以获得进一步的见解。除了科学方面之外，该项目还强调教育，让研究生和本科生参与进来，并促进科学的多样性。积极鼓励不同机构之间的合作，促进参与教育计划和实习，为更广泛的科学界做出贡献。技术摘要：SrCu2(BO3)2 (SCBO) 中 Shastry-Sutherland 晶格 (SSL) 模型的初步实现揭示了复杂相图，特别是在高磁场下的磁化平台和拓扑三重子的潜在宿主的研究中。然而，由于技术实验障碍，例如需要低温下的高磁场和高压，理解 SCBO 中的这些紧急状态面临着挑战。为此，本研究重点关注基于稀土的新型 SSL 模型化合物系列，以便更容易地研究场和压力引起的现象。该研究计划包括合成、内部热力学测量以及与国家用户设施合作的先进光谱实验。与专家理论家的持续合作为实验结果提供了重要的分析和解释。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。