Non-Hermitian coherent coupling of nanomagnets by exchange spin waves

Hanchen Wang, Jilei Chen, Tao Yu, Chuanpu Liu, Chenyang Guo, Hao Jia, Song Liu, Ka Shen, Tao Liu, Jianyu Zhang, Marco A.Z. Cabero, Qiuming Song, Sa Tu, Mingzhong Wu, Xiufeng Han, Ke Xia, Dapeng Yu, Gerrit E.W. Bauer, Haiming Yu

Research output: Contribution to journalArticlepeer-review

Abstract

Non-Hermitian physics has recently attracted much attention in optics and photonics. Less explored is non-Hermitian magnonics that provides opportunities to take advantage of the inevitable dissipation of magnons or spin waves in magnetic systems. Here we demonstrate non-Hermitian coherent coupling of two distant nanomagnets by fast spin waves with sub-50 nm wavelengths. Magnons in two nanomagnets are unidirectionally phase-locked with phase shifts controlled by magnon spin torque and spin-wave propagation. Our results are attractive for analog neuromorphic computing that requires unidirectional information transmission.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2020 May 20

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Non-Hermitian coherent coupling of nanomagnets by exchange spin waves'. Together they form a unique fingerprint.

Cite this