气候变化领域集成服务门户(CCPortal): Experimental characterization of fragile topology in an acoustic metamaterial

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DOI	10.1126/science.aaz7654
	Experimental characterization of fragile topology in an acoustic metamaterial
	Peri V.; Song Z.-D.; Serra-Garcia M.; Engeler P.; Queiroz R.; Huang X.; Deng W.; Liu Z.; Andrei Bernevig B.; Huber S.D.
发表日期	2020
ISSN	0036-8075
起始页码	797
结束页码	800
卷号	367 期号:6479
英文摘要	Symmetries crucially underlie the classification of topological phases of matter. Most materials, both natural as well as architectured, possess crystalline symmetries. Recent theoretical works unveiled that these crystalline symmetries can stabilize fragile Bloch bands that challenge our very notion of topology: Although answering to the most basic definition of topology, one can trivialize these bands through the addition of trivial Bloch bands. Here, we fully characterize the symmetry properties of the response of an acoustic metamaterial to establish the fragile nature of the low-lying Bloch bands. Additionally, we present a spectral signature in the form of spectral flow under twisted boundary conditions. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词	boundary condition classification crystal structure experimental study symmetry topology article human human experiment
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133707
推荐引用方式 GB/T 7714	Peri V.,Song Z.-D.,Serra-Garcia M.,et al. Experimental characterization of fragile topology in an acoustic metamaterial[J]. Science,2020,367(6479).
APA	Peri V..,Song Z.-D..,Serra-Garcia M..,Engeler P..,Queiroz R..,...&Huber S.D..(2020).Experimental characterization of fragile topology in an acoustic metamaterial.,367(6479).
MLA	Peri V.,et al."Experimental characterization of fragile topology in an acoustic metamaterial".367.6479(2020).