Chiral Magnonics: Reprogrammable Nanoscale Spin Wave Networks Based on Chiral Domain Walls

Abstract

Spin waves offer promissing perspectives as information carriers for future computational architectures beyond conventional complementary metaloxide-semiconductor (CMOS) technology, due to their benefits for device minimizations and low-ohmic losses. Although plenty of magnonic devices are proposed previously, the scalable nanoscale networks based on spin waves are still missing. Here, we demonstrate a reprogrammable two-dimensional spin wave network by combining the chiral exchange spin waves and chiral domain walls. The spin wave network can be two-dimensionally extended and offers unprecedented control of exchange spin waves. Each cell in the network can excite, transmit and detect spin waves independently in the chiral domain wall and spin wave logic computings are also demonstrated. Our results open up perspectives for integrating spin waves into future logic and computing circuits and networks.