@article{Wang2021, 
author = {Hanchen Wang and Jilei Chen and Tao Yu and Chuanpu Liu and Chenyang Guo and Song Liu and Ka Shen and Hao Jia and Tao Liu and Jianyu Zhang and Marco A. Cabero Z and Qiuming Song and Sa Tu and Mingzhong Wu and Xiufeng Han and Ke Xia and Dapeng Yu and Gerrit E. W. Bauer and Haiming Yu},
title = {Nonreciprocal coherent coupling of nanomagnets by exchange spin waves},
year = {2021},
journal = {Nano Research},
volume = {14},
number = {7},
pages = {2133-2138},
keywords = {spintronics, nanomagnets, spin waves, coherent coupling, nonreciprocity},
url = {https://www.sciopen.com/article/10.1007/s12274-020-3251-5},
doi = {10.1007/s12274-020-3251-5},
abstract = {Nanomagnets are widely used to store information in non-volatile spintronic devices. Spin waves can transfer information with low-power consumption as their propagations are independent of charge transport. However, to dynamically couple two distant nanomagnets via spin waves remains a major challenge for magnonics. Here we experimentally demonstrate coherent coupling of two distant Co nanowires by fast propagating spin waves in an yttrium iron garnet thin film 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. The coupled system is finally formulated by an analytical theory in terms of an effective non-Hermitian Hamiltonian. Our results are attractive for analog neuromorphic computing that requires unidirectional information transmission.}
}