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引用次数: 0
摘要
在化学和生物化学中,手性代表结构的不对称,其特征是 DNA 等材料的镜像不可叠加。而在物理学中,手性通常是指粒子或准粒子在动量空间中的自旋-动量锁定。分子和晶体中的结构手性看似互不关联,但却可以通过轨道动量锁定驱动电子手性;也就是说,手性可以从原子几何转移到电子轨道。电子手性为人们深入理解手性诱导的自旋选择性(电子通过手性材料后表现出显著的自旋极化)和电磁手性各向异性(其特点是二极管式传输)提供了可能。它还进一步产生了新的现象,如反常圆偏振光发射,其中光的手性取决于发射方向。这些手性驱动效应将对自旋电子学、光电子学和生物化学领域的基础科学和技术应用产生广泛影响。
Structural Chirality and Electronic Chirality in Quantum Materials
In chemistry and biochemistry, chirality represents the structural asymmetry characterized by nonsuperimposable mirror images for a material such as DNA. In physics, however, chirality commonly refers to the spin–momentum locking of a particle or quasiparticle in the momentum space. While seemingly disconnected, structural chirality in molecules and crystals can drive electronic chirality through orbital–momentum locking; that is, chirality can be transferred from the atomic geometry to electronic orbitals. Electronic chirality provides an insightful understanding of chirality-induced spin selectivity, in which electrons exhibit salient spin polarization after going through a chiral material, and electrical magnetochiral anisotropy, which is characterized by diode-like transport. It further gives rise to new phenomena, such as anomalous circularly polarized light emission, in which the light handedness relies on the emission direction. These chirality-driven effects will generate broad impacts for fundamental science and technology applications in spintronics, optoelectronics, and biochemistry.
期刊介绍:
The Annual Review of Materials Research, published since 1971, is a journal that covers significant developments in the field of materials research. It includes original methodologies, materials phenomena, material systems, and special keynote topics. The current volume of the journal has been converted from gated to open access through Annual Reviews' Subscribe to Open program, with all articles published under a CC BY license. The journal defines its scope as encompassing significant developments in materials science, including methodologies for studying materials and materials phenomena. It is indexed and abstracted in various databases, such as Scopus, Science Citation Index Expanded, Civil Engineering Abstracts, INSPEC, and Academic Search, among others.