Nanoscale Vector Magnetic Sensing with Current‐Driven Stochastic Nanomagnet

Autor: Shuai Zhang, Shihao Li, Zhe Guo, Yan Xu, Ruofan Li, Zhenjiang Chen, Min Song, Xiaofei Yang, Liang Li, Xuecheng Zou, Long You
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Advanced Electronic Materials, Vol 10, Iss 4, Pp n/a-n/a (2024)
Druh dokumentu: article
ISSN: 2199-160X
DOI: 10.1002/aelm.202300753
Popis: Abstract Detection of vector magnetic fields at nanoscale dimensions is critical in applications ranging from basic material science and fundamental physics to information storage and medical diagnostics. So far, nanoscale vector magnetic field sensing is achieved solely by exploiting a single nitrogen‐vacancy (NV) center in a diamond, by evaluating the Zeeman splitting of NV spin qubits by using the technique of an optically‐detected magnetic resonance. This protocol requires a complex optical setup and expensive detection systems to detect the photoluminescence light, which may limit miniaturization and scalability. Here, a simple approach with all‐electric operation to sensing a vector magnetic field at 200 × 200 nm2 dimensions is experimentally demonstrated, by monitoring a stochastic nanomagnet's transition probability from a metastable state, excited by a driving current due to spin‐orbit torque, to a settled state.
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