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; 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：磁性沮丧的系统提供了对物理学的诱人探索，在这种探索中，不同的力阻止形成简单的磁有序模式，从而导致各种量子状态，从异国情调的自旋模式到超导体。 Shastry-Sutherland Grattice（SSL）模型在解释量子磁力方面起着至关重要的作用，从而在不同条件下（例如压力和磁场）提供了对过渡的见解，从而形成了新型磁性模式。了解这些现象不仅仅是揭示宇宙的奥秘。这是关于塑造技术的未来，就像在Spintronics领域一样，这些见解可以推动创新的进步。例如，利用自旋形式的原理可以实现更有效的电子设备的开发。这可能意味着更快，更节能的计算机以及改进的通信设备，可显着增强我们的连接和处理信息的方式。受SSL模型突破的启发，该建议建议探索一个新的化合物系列，以加深我们的理解和推动技术进步。该项目着重于实践研究，包括合成材料，进行实验以测量热力学特性，并采用先进的散射技术来进一步见解。除了科学方面，该项目还强调教育，涉及毕业生和本科生，并培养科学多样性。 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.但是，由于技术实验性障碍，例如在低温下需要高磁场和高压，因此在SCBO中了解这些新兴状态会带来挑战。作为回应，这项研究着重于新的基于稀土的SSL模型的化合物家族，从而可以对现场和压力诱导的现象进行更容易获得的研究。研究计划包括与国家用户设施合作的合成，内部热力学测量和高级光谱实验。与专家理论家进行的持续合作提供了对实验结果的重要分析和解释。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响审查标准，被认为值得通过评估来获得支持。