Abstract
We introduce feedback-measurement technologies to achieve flexible control of Weyl points and conduct the first experimental demonstration of Weyl type I-II transition in mechanical systems. We demonstrate that non-Hermiticity can expand the Fermi arc surface states from connecting Weyl points to Weyl rings, and lead to a localization transition of edge states influenced by the interplay between band topology and the non-Hermitian skin effect. Our findings offer valuable insights into the design and manipulation of Weyl points in mechanical systems, providing a promising avenue for manipulating topological modes in non-Hermitian systems.
Original language | English (US) |
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Article number | 126602 |
Journal | Physical review letters |
Volume | 132 |
Issue number | 12 |
DOIs | |
State | Published - Mar 22 2024 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy