EAGER: Universal transport and diamagnetic signatures in non-magnetic topological semimetals with linear magnetoresistance
EAGER:具有线性磁阻的非磁性拓扑半金属中的通用输运和抗磁性特征
基本信息
- 批准号:2001376
- 负责人:
- 金额:$ 9.91万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-12-15 至 2021-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Non-technical Absttract:The electrical properties of materials are governed by the quantum mechanical motion of electrons in the material. Materials can be insulators, with very low electrical conductivity, or metals, with high electrical conductivity, depending on how the negatively charged electrons move amongst the stationary and positively charged atomic nuclei. Some materials are semimetals where the properties lie between those of metals and insulators. Recently there has been a great deal of interest in topological semimetals where topology plays a major role in determining their properties. This project will investigate the electrical conduction of topological semimetals under high magnetic field to pinpoint their unique characteristics. The results will enable laboratory tests to separate topological semimetals from more conventional counterparts, and to determine the robustness of topological characteristics under conditions that would be encountered in technological applications. These outcomes can be directly employed in developing fabrication techniques and device design strategies to incorporate the novel properties and functionality of topological semimetals in innovative technologies.Technical Abstract:This project aims to identify the magnetotransport and diamagnetic signatures that distinguish topological semimetals from conventional semimetals with large non-saturating magnetoresistance (MR). The outcomes will clarify the universal features of topological semimetal that are unique characteristics of topological electronic structures and the associated Berry phase. A framework will be developed to characterize the disorder leading to the emergence of linear MR in the high field limit, which is expected to render a better understanding of the roles of disorder in linear MR phenomena in general. The prediction for the emergence of linear MR as a consequence of topological nodes and linear dispersion in band structure will be tested for a broader range of semimetal systems and will uncover the common elements of the linear non-saturating MR phenomena.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.
摘要:材料的电学性质是由材料中电子的量子力学运动决定的。材料可以是具有非常低导电性的绝缘体,或具有高导电性的金属,这取决于带负电的电子如何在静止的和带正电的原子核之间移动。有些材料是半金属,其性质介于金属和绝缘体之间。 最近,拓扑半金属引起了人们极大的兴趣,其中拓扑在决定它们的性质方面起着重要作用。 本计画将探讨拓扑半金属在强磁场下的导电性,以找出其独特的特性。这些结果将使实验室测试能够将拓扑半金属与更传统的对应物分开,并确定在技术应用中遇到的条件下拓扑特征的鲁棒性。这些成果可以直接用于开发制造技术和设备设计策略,将拓扑半金属的新特性和功能,在创新technology.Technical摘要:本项目旨在确定的magnetotransport和抗磁签名,区分拓扑半金属从传统的半金属与大的非饱和磁阻(MR)。这些结果将阐明拓扑半金属的普遍特征,即拓扑电子结构和相关Berry相的独特特征。 一个框架将被开发来表征导致线性MR的出现在高场极限,这是预期呈现出更好的理解一般的线性MR现象中的无序的作用的障碍。由于能带结构中的拓扑节点和线性色散而出现线性MR的预测将在更广泛的半金属系统中进行测试,并将揭示线性非饱和MR现象的共同要素。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Thermoelectric properties of the stripe-charge ordering phases in IrTe2
- DOI:10.1103/physrevb.103.045102
- 发表时间:2021-01
- 期刊:
- 影响因子:3.7
- 作者:Jungsang You;M. Eom;Minhyea Lee;Y. Jo;C. Won;S. Cheong;Kyoo Kim;J. S. Kim
- 通讯作者:Jungsang You;M. Eom;Minhyea Lee;Y. Jo;C. Won;S. Cheong;Kyoo Kim;J. S. Kim
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Minhyea Lee其他文献
Capacitive discharge in flash experiments: A discussion of the charged species
闪光实验中的电容放电:带电物质的讨论
- DOI:
10.1111/jace.19250 - 发表时间:
2023 - 期刊:
- 影响因子:3.9
- 作者:
Seohyeon Jo;Minhyea Lee;I. Leahy;X. Vendrell;R. Raj - 通讯作者:
R. Raj
Structure and magnetic properties of the orthorhombic n=2 Ruddlesden–Popper phases Sr3Co2O5+δ (δ=0.91, 0.64 and 0.38)
斜方晶系 n=2 Ruddlesden-Popper 相 Sr3Co2O5+δ(δ=0.91、0.64 和 0.38)的结构和磁性能
- DOI:
10.1016/j.jssc.2005.11.013 - 发表时间:
2006 - 期刊:
- 影响因子:3.3
- 作者:
L. Viciu;H. Zandbergen;Qiang Xu;Q. Huang;Minhyea Lee;R. Cava - 通讯作者:
R. Cava
Disordered exchange is biased
无序交换是有偏的
- DOI:
10.1038/s41567-020-01127-6 - 发表时间:
2021-01-21 - 期刊:
- 影响因子:18.400
- 作者:
Minhyea Lee - 通讯作者:
Minhyea Lee
Tunneling characteristics of I- and HgI2-intercalated Bi2Sr2CaCu2O8+x single crystals
I 和 HgI2 插层 Bi2Sr2CaCu2O8 x 单晶的隧道特性
- DOI:
10.1016/s0921-4526(99)02864-1 - 发表时间:
2000 - 期刊:
- 影响因子:0
- 作者:
Minhyea Lee;Hyun;Yong;Hu;Woo Lee;J. Choy;D. Ha - 通讯作者:
D. Ha
Structure and magnetism of NaRu2O4 and Na2.7Ru4O9
NaRu2O4 和 Na2.7Ru4O9 的结构和磁性
- DOI:
10.1016/j.jssc.2005.10.016 - 发表时间:
2006 - 期刊:
- 影响因子:3.3
- 作者:
K. A. Regan;Q. Z. Huang;Minhyea Lee;A. P. Ramirez;R. Cava - 通讯作者:
R. Cava
Minhyea Lee的其他文献
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