@article{bae994eda6434f839b7baca11bf6593d,
title = "Spin torque nano-oscillators based on antiferromagnetic skyrmions",
abstract = "Skyrmion-based spin torque nano-oscillators are potential next-generation microwave signal generators. However, ferromagnetic skyrmion-based spin torque nano-oscillators cannot reach high oscillation frequencies. In this work, we propose to use the circular motion of an antiferromagnetic skyrmion to create an oscillation signal in order to overcome this obstacle. Micromagnetic simulations demonstrate that the antiferromagnetic skyrmion-based spin torque nano-oscillators can produce high frequencies (tens of GHz). Furthermore, the speed of the circular motion for an antiferromagnetic skyrmion in a nanodisk is analytically derived, which agrees well with the results of numerical simulations. Our findings are useful for the understanding of the inertial dynamics of an antiferromagnetic skyrmion and the development of future skyrmion-based spin torque nano-oscillators.",
author = "Laichuan Shen and Jing Xia and Guoping Zhao and Xichao Zhang and Motohiko Ezawa and Tretiakov, {Oleg A.} and Xiaoxi Liu and Yan Zhou",
note = "Funding Information: G. Z. acknowledges the support from the National Natural Science Foundation of China (Grant Nos. 51771127, 51571126, and 51772004) of China and the Scientific Research Fund of Sichuan Provincial Education Department (Grant Nos. 18TD0010 and 16CZ0006). X. Z. acknowledges the support from the Presidential Postdoctoral Fellowship of the Chinese University of Hong Kong, Shenzhen (CUHKSZ). M. E. acknowledges the support from the Grants-in-Aid for Scientific Research from JSPS KAKENHI (Grant Nos. JP18H03676, JP17K05490, and JP15H05854) and also the support from CREST, JST (Grant Nos. JPMJCR16F1 and JPMJCR1874). O.A.T. acknowledges support from the Grants-in-Aid for Scientif ic Research (Grant Nos. 17K05511 and 17H05173) from MEXT, Japan, from the grant of the Center for Science and Innovation in Spintronics (Core Research Cluster), Tohoku University, from JSPS and RFBR under the Japan-Russian Research Cooperative Program, and from the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST “MISiS” (Grant No. K2-2017-005), implemented by a governmental decree, dated 16th of March 2013, N 211. X. L. acknowledges the support from the Grants-in-Aid for Scientific Research from JSPS KAKENHI (Grant Nos. 17K19074, 26600041, and 22360122). Y. Z. acknowledges the support from the President{\textquoteright}s Fund of CUHKSZ, the National Natural Science Foundation of China (Grant No. 11574137), and the Shenzhen Fundamental Research Fund (Grant Nos. JCYJ20160331164412545 and JCYJ20170410171958839). Publisher Copyright: {\textcopyright} 2019 Author(s).",
year = "2019",
month = jan,
day = "28",
doi = "10.1063/1.5080302",
language = "English",
volume = "114",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "4",
}