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Chirality memory stored in magnetic domain walls in the ferromagnetic state of MnP

MnPの強磁性状態の磁壁に保存されたキラリティメモリ

Jiang, N.*; 新居 陽一*; 有沢 洋希*; 齊藤 英治; 大江 純一郎*; 小野瀬 佳文*

Jiang, N.*; Nii, Yoichi*; Arisawa, Hiroki*; Saito, Eiji; Oe, Junichiro*; Onose, Yoshinori*

Chirality in a helimagnetic structure is determined by the sense of magnetic moment rotation. We found that the chiral information did not disappear even after the phase transition to the high-temperature ferromagnetic phase in a helimagnet MnP. The 2nd harmonic resistivity $$rho^{2mathrm{f}}$$, which reflects the breaking down of mirror symmetry, was found to be almost unchanged after heating the sample above the ferromagnetic transition temperature and cooling it back to the helimagnetic state. The application of a magnetic field along the easy axis in the ferromagnetic state quenched the chirality-induced $$rho^{2mathrm{f}}$$. This indicates that the chirality memory effect originated from the ferromagnetic domain walls.

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パーセンタイル:43.5

分野:Physics, Multidisciplinary

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