强相关量子材料的纳米级电动力学

IF 19 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Reports on Progress in Physics Pub Date : 2017-01-01 DOI:10.1088/0034-4885/80/1/014501
Mengkun Liu, A. Sternbach, A. Sternbach, D. Basov, D. Basov
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引用次数: 60

摘要

电子、磁性和结构相不均匀性在强相关量子材料中普遍存在。相不均匀性的特征长度尺度可以从原子尺度到介观尺度,这取决于它们的微观起源以及各种样品依赖因素。因此,对相关现象的理解的进展关键取决于适合提供适当空间分辨率的实验技术。这一要求很难满足凝聚态物理中一些最具信息量的方法,包括红外和光谱学。然而,近场光学和成像技术的最新发展使得电磁响应的详细表征能够达到10纳米的空间分辨率。因此,在纳米尺度上利用光学方法的成熟能力来表征各种相关量子系统中的电子过程和晶格动力学是可行的。本文简要介绍了应用于原型相关量子材料的最新近场技术。我们还讨论了互补的微观和光谱方法,揭示了不同能量尺度下量子材料的重要介观动力学。
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Nanoscale electrodynamics of strongly correlated quantum materials
Electronic, magnetic, and structural phase inhomogeneities are ubiquitous in strongly correlated quantum materials. The characteristic length scales of the phase inhomogeneities can range from atomic to mesoscopic, depending on their microscopic origins as well as various sample dependent factors. Therefore, progress with the understanding of correlated phenomena critically depends on the experimental techniques suitable to provide appropriate spatial resolution. This requirement is difficult to meet for some of the most informative methods in condensed matter physics, including infrared and optical spectroscopy. Yet, recent developments in near-field optics and imaging enabled a detailed characterization of the electromagnetic response with a spatial resolution down to 10 nm. Thus it is now feasible to exploit at the nanoscale well-established capabilities of optical methods for characterization of electronic processes and lattice dynamics in diverse classes of correlated quantum systems. This review offers a concise description of the state-of-the-art near-field techniques applied to prototypical correlated quantum materials. We also discuss complementary microscopic and spectroscopic methods which reveal important mesoscopic dynamics of quantum materials at different energy scales.
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来源期刊
Reports on Progress in Physics
Reports on Progress in Physics 物理-物理:综合
CiteScore
31.90
自引率
0.00%
发文量
45
审稿时长
6-12 weeks
期刊介绍: Reports on Progress in Physics is a highly selective journal with a mission to publish ground-breaking new research and authoritative invited reviews of the highest quality and significance across all areas of physics and related areas. Articles must be essential reading for specialists, and likely to be of broader multidisciplinary interest with the expectation for long-term scientific impact and influence on the current state and/or future direction of a field.
期刊最新文献
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