Abstract
Abstract
Spin-torque diodes (STDs) based on magnetic tunnel junctions (MTJs) are newly developing spintronic devices. However, so far, the highly sensitive STDs reported in experiments have a low detection frequency, generally lower than 2 GHz, which limits the application of STDs in HF fields. Here, we develop Co-rich MTJs to enhance in-plane magnetic anisotropy and demonstrate an in-plane magnetized HF ultra-sensitive STD. By selecting the proper field and using an injection locking mechanism, HF microwave detection close to 5 GHz can be realized with a sensitivity greater than 3700 mV mW−1. This result may pave the way to developing spin-torque microwave detectors that are HF and highly sensitive.
Funder
Shenzhen Fundamental Research Fund
K. C. Wong Education Foundation
Natural Science Foundation of Jiangsu Province of China
Jiangxi Province “Double Thousand Plan”
Shenzhen Peacock Group Plan
National Natural Science Foundation of China
Guangdong Special Support Project
CAS Young Talent program
Wuxi University Research Start-up Fund for Introduced Talents
Natural Science Research of Jiangsu Higher Education Institutions of China
Subject
General Physics and Astronomy,General Engineering