Electronic Properties of Transition Metal Oxides

该个人研究者奖将资助研究重点放在选定的氧化铜超导体和层状锰的高质量单晶的面内和面外正常状态导电的研究。实验项目的重点是铜酸盐在相图上的正常状态传导的转变，包括绝缘、欠掺杂和过掺杂。所获得的电输运和磁化数据将进行分析，以获得有关传导机制的信息。层状锰矿具有丰富的相图，包括多种相变。这些热力学相变对电荷输运有很强的影响。对锰矿石的研究重点将放在热力学相变对导电的影响上。该研究有望大大提高我们对铜酸盐和锰酸盐电学行为的基本认识。更广泛地说，这项基础研究的结果可以为适当的掺杂方案提供见解，以促进铜酸盐和锰酸盐在电子传感器和设备（如磁场传感器）甚至计算机逻辑设备中的应用。这个高度跨学科的项目将有助于合作机构的博士和本科生以及博士后研究人员的教育和培训。在当今以知识为基础、技术驱动的经济中，本研究项目参与者所获得的专业知识的多样性是一个巨大的优势，对未来在工业、政府或学术界的职业生涯有益。这项个人研究者奖将资助一项实验研究项目，研究高温超导体和层状锰矿石的不同寻常的电学特性。高温超导体，即使在正常状态下，导电方式也与铜和硅等典型电导体大不相同。同时，电在锰矿石中的传导受到热力学相变的强烈影响。该研究有望大大提高我们对铜酸盐和锰酸盐电学行为的基本认识。澄清这些新的电学行为可能有助于这些材料最终应用于电子传感器和设备，如磁场传感器甚至计算机逻辑设备。该项目为研究生提供了跨学科的研究和教育机会。它涉及从事论文研究的少数民族研究生，并接受对未来在工业，政府或学术界的职业生涯有益的优秀培训。＊＊＊

This individual investigator award will fund research focused on studies of the in-plane and out-of-plane normal-state electrical conduction of high quality single crystals of selected copper-oxide superconductors and layered manganites. The emphasis of the experimental project on the cuprates will be on the transformation of their normal-state conduction across the phase diagram which includes insulating, under-doped, and over-doped regimes. The electrical transport and magnetization data obtained will be analyzed for information about conduction mechanisms. Layered manganites have a rich phase diagram which includes several phase transitions. These thermodynamic phase transitions have a strong effect on the charge transport. The emphasis of the manganite research will be on the effect of thermodynamic phase transitions on the electrical conduction. The research is expected to significantly enhance our fundamental understanding of the electrical behaviors of cuprates and manganites. More broadly, the results from this basic investigation may provide insight into appropriate doping schemes to facilitate applications of cuprates and manganites for electronic sensors and devices such as magnetic field sensors or even computer logic devices. This highly interdisciplinary project will contribute to the education and training of doctoral and undergraduate students, as well as postdoctoral researchers at the institutions which are part of the collaboration. The diversity of expertise gained by the participants in this research program is a substantial advantage in today's knowledge based, technology driven economy, being beneficial to a future career in industry, government, or academia.%%%This individual investigator award will fund an experimental research project to study the unusual electrical properties of high temperature superconductors and layered manganites. The high temperature superconductors, even in the normal state, conduct electricity in ways that are very different from typical electrical conductors such as copper and silicon. Also, the conduction of electricity in manganites is strongly affected by thermodynamic phase transitions. The proposed research is expected to significantly enhance our fundamental understanding of the electrical behaviors of cuprates and manganites. Clarifying these novel electrical behaviors may contribute to eventual applications of these materials for electronic sensors and devices such as magnetic field sensors or even computer logic devices. This project offers excellent research and education opportunities for graduate students within an interdisciplinary program. It involves minority-group graduate students who pursue thesis research and receive excellent training beneficial to a future career in industry, government, or academia. ***