Title	A phononic quantized quadrupole insulator
Creator	Huber, Sebastian
Publisher	Banff International Research Station for Mathematical Innovation and Discovery
Date Issued	2017-09-12T14:49
Description	All existing topological band structures can be traced back to a quantized dipole moment, or a mathematical generalization thereof. Recently, it has been shown theoretically, how the quadrupole moment of a charge distribution can be quantized. The associated phenomenology includes in-gap states on surfaces two or more dimensions lower than the bulk. Here, we report on the experimental observation of such a quadrupole state in a mechanical metamaterial made from weakly coupled oscillators in a silicon membrane. We characterize the topological in-gap “corner-states” together with the induced gapped edge modes.
Extent	33 minutes
Subject	Mathematics; Partial differential equations; General topology
Type	Moving Image
File Format	video/mp4
Language	eng
Notes	Author affiliation: ETH
Series	BIRS Workshop Lecture Videos (Banff, Alta)
Date Available	2018-04-07
Provider	Vancouver : University of British Columbia Library
Rights	Attribution-NonCommercial-NoDerivatives 4.0 International
DOI	10.14288/1.0365235
URI	http://hdl.handle.net/2429/65163
Affiliation	Non UBC
Peer Review Status	Unreviewed
Scholarly Level	Faculty
Rights URI	http://creativecommons.org/licenses/by-nc-nd/4.0/
Aggregated Source Repository	DSpace

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