Observation of geometry-dependent skin effect in non-Hermitian phononic crystals with exceptional points

Qiuyan Zhou, Jien Wu, Zhenhang Pu, Jiuyang Lu, Xueqin Huang, Weiyin Deng (), Manzhu Ke () and Zhengyou Liu ()
Additional contact information
Qiuyan Zhou: Wuhan University
Jien Wu: South China University of Technology
Zhenhang Pu: Wuhan University
Jiuyang Lu: Wuhan University
Xueqin Huang: South China University of Technology
Weiyin Deng: Wuhan University
Manzhu Ke: Wuhan University
Zhengyou Liu: Wuhan University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Exceptional points and skin effect, as the two distinct hallmark features unique to the non-Hermitian physics, have each attracted enormous interests. Recent theoretical works reveal that the topologically nontrivial exceptional points can guarantee the non-Hermitian skin effect, which is geometry-dependent, relating these two unique phenomena. However, such novel relation remains to be confirmed by experiments. Here, we realize a non-Hermitian phononic crystal with exceptional points, which exhibits the geometry-dependent skin effect. The exceptional points connected by the bulk Fermi arcs, and the skin effects with the geometry dependence, are evidenced in simulations and experiments. Our work, building an experimental bridge between the exceptional points and skin effect and uncovering the unconventional geometry-dependent skin effect, expands a horizon in non-Hermitian physics.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-023-40236-7 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40236-7

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-40236-7

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().