Hybrid perfect metamaterial absorber for microwave spin rectification applications.

Jie Qian, Peng Gou, Hong Pan, Liping Zhu, Y S Gui, C-M Hu, Zhenghua An

Abstract read

In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Jie QianState Key Laboratory of Surface Physics, Institute of Nanoelectronic Devices and Quantum Computing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Physics, Fudan University, Shanghai, 200433, China.

Peng GouState Key Laboratory of Surface Physics, Institute of Nanoelectronic Devices and Quantum Computing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Physics, Fudan University, Shanghai, 200433, China.

Hong PanState Key Laboratory of Surface Physics, Institute of Nanoelectronic Devices and Quantum Computing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Physics, Fudan University, Shanghai, 200433, China.

Liping ZhuState Key Laboratory of Surface Physics, Institute of Nanoelectronic Devices and Quantum Computing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Physics, Fudan University, Shanghai, 200433, China.

Y S GuiDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, R3T 2N2, Canada.

C-M HuDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, R3T 2N2, Canada.

Zhenghua AnState Key Laboratory of Surface Physics, Institute of Nanoelectronic Devices and Quantum Computing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Physics, Fudan University, Shanghai, 200433, China. anzhenghua@fudan.edu.cn.

Funding

National Basic Research Program of China (973 Program) 2016YFA0302000National Natural Science Foundation of China Nos. 11674070, 11991060, 11427807, 11634012Shanghai Science and Technology Committee 18JC1420400, 18JC1410300

6 · The paper itself

Abstract

Metamaterials provide compelling capabilities to manipulate electromagnetic waves beyond the natural materials and can dramatically enhance both their electric and magnetic fields. The enhanced magnetic fields, however, are far less utilized than the electric counterparts, despite their great potential in spintronics. In this work, we propose and experimentally demonstrate a hybrid perfect metamaterial absorbers which combine the artificial metal/insulator/metal (MIM) metamaterial with the natural ferromagnetic material permalloy (Py) and realize remarkably larger spin rectification effect. Magnetic hot spot of the MIM metamaterial improves considerably electromagnetic coupling with spins in the embedded Py stripes. With the whole hybridized structure being optimized based on coupled-mode theory, perfect absorption condition is approached and an approximately 190-fold enhancement of spin-rectifying photovoltage is experimentally demonstrated at the ferromagnetic resonance at 7.1 GHz. Our work provides an innovative solution to harvest microwave energy for spintronic applications, and opens the door to hybridized magnetism from artificial and natural magnetic materials for emergent applications such as efficient optospintronics, magnonic metamaterials and wireless energy transfer.

Identifiers

PMID33159148

DOI10.1038/s41598-020-76090-6

PMCPMC7648081

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.