Antiferromagnetic CuMnAs multi-level memory cell with microelectronic compatibility

Nature Communications
K OlejníkT Jungwirth

Abstract

Antiferromagnets offer a unique combination of properties including the radiation and magnetic field hardness, the absence of stray magnetic fields, and the spin-dynamics frequency scale in terahertz. Recent experiments have demonstrated that relativistic spin-orbit torques can provide the means for an efficient electric control of antiferromagnetic moments. Here we show that elementary-shape memory cells fabricated from a single-layer antiferromagnet CuMnAs deposited on a III-V or Si substrate have deterministic multi-level switching characteristics. They allow for counting and recording thousands of input pulses and responding to pulses of lengths downscaled to hundreds of picoseconds. To demonstrate the compatibility with common microelectronic circuitry, we implemented the antiferromagnetic bit cell in a standard printed circuit board managed and powered at ambient conditions by a computer via a USB interface. Our results open a path towards specialized embedded memory-logic applications and ultra-fast components based on antiferromagnets.

References

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Citations

Mar 14, 2018·Nature Nanotechnology·Peter WadleyTomas Jungwirth
Aug 24, 2019·Nature Communications·Yang ZhangBinghai Yan
Aug 5, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Debjani Das Gupta, Santanu K Maiti
May 10, 2018·Science Advances·Kamil OlejníkTomas Jungwirth
Nov 10, 2018·Nature Communications·J GodinhoJ Wunderlich
Nov 28, 2019·Nature Communications·Leandro SalemiPeter M Oppeneer
Mar 9, 2019·Physical Review Letters·Ding-Fu ShaoEvgeny Y Tsymbal
Jun 5, 2018·Physical Review Letters·X Z ChenY Tserkovnyak
May 1, 2020·Nature·Hanshen TsaiSatoru Nakatsuji
Oct 23, 2020·IScience·Yi CaoKaiyou Wang
Feb 13, 2021·Nano Letters·Sandip AryalRanjit Pati
Nov 13, 2020·Nature Communications·Samik DuttaGuptaH Ohno
May 18, 2021·Frontiers in Neuroscience·Cheng WangKaushik Roy
May 16, 2019·The Journal of Physical Chemistry Letters·Yu-Jia SunJun Zhang
Aug 20, 2020·ACS Applied Materials & Interfaces·Qiang CaoXiaolin Wang
Nov 7, 2021·Nature Communications·Jaimin KangByong-Guk Park

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Methods Mentioned

BETA
chips
electron beam lithography
chip
electron microscopy

Software Mentioned

XMLD
PEEM

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