TY - JOUR
T1 - Electric current control of spin helicity in an itinerant helimagnet
AU - Jiang, N.
AU - Nii, Y.
AU - Arisawa, H.
AU - Saitoh, E.
AU - Onose, Y.
N1 - Funding Information:
The crystal growth was carried out by joint research in the Institute for Solid State Physics, The University of Tokyo with the help of R. Ishii and Z. Hiroi. The fabrication of the sample device was carried out partly by collaborative research in the Cooperative Research and Development Center for Advanced Materials, Institute of Materials Research, Tohoku University with the help of K. Takanashi and T. Seki. The authors thank G.E.W. Bauer, Y. Shimamoto, Y. Togawa, and J. Ohe for fruitful discussions. This work was supported in part by JSPS KAKENHI grant numbers JP16H04008, JP17H05176, JP18K13494, and JP19H05600 and the JST ERATO Spin Quantum Rectification Project (JPMJER1402). N.J. is supported by a JSPS fellowship (No. JP19J11151).
Publisher Copyright:
© 2020, The Author(s).
PY - 2020/12/1
Y1 - 2020/12/1
N2 - A helimagnet is a chiral magnet in which the direction of the magnetic moment spatially rotates in a plane perpendicular to the propagation vector. The sense of the rotation known as spin helicity is a robust degree of freedom of matter and may provide a new concept of magnetic memory if it can be electrically controlled and detected. Here we show that the helicity can be controlled by magnetic fields and electric currents in an itinerant helimagnet MnP. Second-harmonic resistivity measurements allow us to read out the controlled helicity. In contract to an insulating multiferroic magnet, in which spin rotation was shown to be controllable by an electric field, we achieve helicity manipulation by using an electric current in the conducting helimagnet. The controllability of the spin helicity may pave the way to new method of realizing magnetic memories based on the spin internal degrees of freedom.
AB - A helimagnet is a chiral magnet in which the direction of the magnetic moment spatially rotates in a plane perpendicular to the propagation vector. The sense of the rotation known as spin helicity is a robust degree of freedom of matter and may provide a new concept of magnetic memory if it can be electrically controlled and detected. Here we show that the helicity can be controlled by magnetic fields and electric currents in an itinerant helimagnet MnP. Second-harmonic resistivity measurements allow us to read out the controlled helicity. In contract to an insulating multiferroic magnet, in which spin rotation was shown to be controllable by an electric field, we achieve helicity manipulation by using an electric current in the conducting helimagnet. The controllability of the spin helicity may pave the way to new method of realizing magnetic memories based on the spin internal degrees of freedom.
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U2 - 10.1038/s41467-020-15380-z
DO - 10.1038/s41467-020-15380-z
M3 - Article
C2 - 32231211
AN - SCOPUS:85082557719
SN - 2041-1723
VL - 11
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1601
ER -