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DOI | 10.1126/science.aah6442 |
Quantized electric multipole insulators | |
Benalcazar, Wladimir A.1,2; Bernevig, B. Andrei3; Hughes, Taylor L.1,2 | |
2017-07-07 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 357期号:6346页码:61-66 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Berry phase provides a modern formulation of electric polarization in crystals. We extend this concept to higher electricmultipole moments and determine the necessary conditions and minimal models for which the quadrupole and octupole moments are topologically quantized electromagnetic observables. Such systems exhibit gapped boundaries that are themselves lower-dimensional topological phases. Furthermore, they host topologically protected corner states carrying fractional charge, exhibiting fractionalization at the boundary of the boundary. To characterize these insulating phases of matter, we introduce a paradigm in which "nested" Wilson loops give rise to topological invariants that have been overlooked. We propose three realistic experimental implementations of this topological behavior that can be immediately tested. Our work opens a venue for the expansion of the classification of topological phases of matter. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416909500003 |
WOS关键词 | WANNIER FUNCTIONS ; ENERGY-BANDS ; POLARIZATION ; SOLIDS ; MODEL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/196405 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Illinois, Dept Phys, Urbana, IL 61801 USA; 2.Univ Illinois, Inst Condensed Matter Theory, Urbana, IL 61801 USA; 3.Princeton Univ, Dept Phys, Princeton, NJ 08544 USA |
推荐引用方式 GB/T 7714 | Benalcazar, Wladimir A.,Bernevig, B. Andrei,Hughes, Taylor L.. Quantized electric multipole insulators[J]. SCIENCE,2017,357(6346):61-66. |
APA | Benalcazar, Wladimir A.,Bernevig, B. Andrei,&Hughes, Taylor L..(2017).Quantized electric multipole insulators.SCIENCE,357(6346),61-66. |
MLA | Benalcazar, Wladimir A.,et al."Quantized electric multipole insulators".SCIENCE 357.6346(2017):61-66. |
条目包含的文件 | 条目无相关文件。 |
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