Driving chiral domain walls in antiferromagnets using rotating magnetic fields
We show theoretically and numerically that an antiferromagnetic domain wall can be moved by a rotating magnetic field in the presence of Dzyaloshinskii-Moriya interaction (DMI). Two motion modes are found: rigid domain wall motion at low frequency (corresponding to the perfect frequency synchronizat...
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Veröffentlicht in: | Physical review. B 2018-05, Vol.97 (18), Article 184418 |
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creator | Pan, Keming Xing, Lingdi Yuan, H. Y. Wang, Weiwei |
description | We show theoretically and numerically that an antiferromagnetic domain wall can be moved by a rotating magnetic field in the presence of Dzyaloshinskii-Moriya interaction (DMI). Two motion modes are found: rigid domain wall motion at low frequency (corresponding to the perfect frequency synchronization) and the oscillating motion at high frequency. In the full synchronized region, the steady velocity of the domain wall is universal, in the sense that it depends only on the frequency of the rotating field and the ratio between DMI strength and exchange constant. The domain wall velocity is independent of the Gilbert damping and the rotating field strength. Moreover, a rotating field in megahertz is sufficient to move the antiferromagnetic domain wall. |
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Moreover, a rotating field in megahertz is sufficient to move the antiferromagnetic domain wall.</description><identifier>ISSN: 2469-9950</identifier><identifier>EISSN: 2469-9969</identifier><identifier>DOI: 10.1103/PhysRevB.97.184418</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Antiferromagnetism ; Damping ; Domain walls ; Field strength ; Frequency synchronization ; Magnetic fields ; Magnetism ; Rotation ; Synchronism</subject><ispartof>Physical review. 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B</title><description>We show theoretically and numerically that an antiferromagnetic domain wall can be moved by a rotating magnetic field in the presence of Dzyaloshinskii-Moriya interaction (DMI). Two motion modes are found: rigid domain wall motion at low frequency (corresponding to the perfect frequency synchronization) and the oscillating motion at high frequency. In the full synchronized region, the steady velocity of the domain wall is universal, in the sense that it depends only on the frequency of the rotating field and the ratio between DMI strength and exchange constant. The domain wall velocity is independent of the Gilbert damping and the rotating field strength. Moreover, a rotating field in megahertz is sufficient to move the antiferromagnetic domain wall.</description><subject>Antiferromagnetism</subject><subject>Damping</subject><subject>Domain walls</subject><subject>Field strength</subject><subject>Frequency synchronization</subject><subject>Magnetic fields</subject><subject>Magnetism</subject><subject>Rotation</subject><subject>Synchronism</subject><issn>2469-9950</issn><issn>2469-9969</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9kF1LwzAUhoMoOOb-gFcFrzvPSZo0udT5CUNF9DqkbbJldO1Musn-vS1Vr87Dy8t74CHkEmGOCOz6bX2M7_ZwO1f5HGWWoTwhE5oJlSol1Ok_czgnsxg3AIACVA5qQl7ugj_4ZpWUax9MnVTt1vgm-TZ1HZMeTNN5Z0Po41Vju5js49AObWe6AcbYl4nztq7iBTlzpo529nun5PPh_mPxlC5fH58XN8u0ZDTrUlcBUMcts8Yxxw2VeVVIDhlVkqMzleUsL4shZgwEOpSWCSalKrjJBWNTcjXu7kL7tbex05t2H5r-paZIGQqKHPoWHVtlaGMM1uld8FsTjhpBD-r0nzqtcj2qYz8SJGOs</recordid><startdate>20180515</startdate><enddate>20180515</enddate><creator>Pan, Keming</creator><creator>Xing, Lingdi</creator><creator>Yuan, H. 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B</jtitle><date>2018-05-15</date><risdate>2018</risdate><volume>97</volume><issue>18</issue><artnum>184418</artnum><issn>2469-9950</issn><eissn>2469-9969</eissn><abstract>We show theoretically and numerically that an antiferromagnetic domain wall can be moved by a rotating magnetic field in the presence of Dzyaloshinskii-Moriya interaction (DMI). Two motion modes are found: rigid domain wall motion at low frequency (corresponding to the perfect frequency synchronization) and the oscillating motion at high frequency. In the full synchronized region, the steady velocity of the domain wall is universal, in the sense that it depends only on the frequency of the rotating field and the ratio between DMI strength and exchange constant. The domain wall velocity is independent of the Gilbert damping and the rotating field strength. 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subjects | Antiferromagnetism Damping Domain walls Field strength Frequency synchronization Magnetic fields Magnetism Rotation Synchronism |
title | Driving chiral domain walls in antiferromagnets using rotating magnetic fields |
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