Magnetization dynamics induced by Rashba effect in a Permalloy nanodisk
Magnetic vortex dynamics mediated by spin-polarized ac current of different amplitudes and frequencies are investigated by micromagnetic simulations in a system lacking structure inversion symmetry. Micromagnetic calculations reveal that the critical current density required to induce vortex core re...
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Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2017-02, Vol.507, p.114-118 |
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creator | Li, Huanan Hua, Zhong Li, Dongfei |
description | Magnetic vortex dynamics mediated by spin-polarized ac current of different amplitudes and frequencies are investigated by micromagnetic simulations in a system lacking structure inversion symmetry. Micromagnetic calculations reveal that the critical current density required to induce vortex core reversal may be decreased to below 1010Am−2 due to strong transverse magnetic field by Rashba effect. We also find the spin torque of ac current plays a trivial role in magnetic vortex dynamics in a broken inversion symmetry system when the current density is on the order of 1010Am−2 and the current with frequency close to the vortex eigenfrequency is the most efficient for reversal. |
doi_str_mv | 10.1016/j.physb.2016.11.037 |
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Micromagnetic calculations reveal that the critical current density required to induce vortex core reversal may be decreased to below 1010Am−2 due to strong transverse magnetic field by Rashba effect. We also find the spin torque of ac current plays a trivial role in magnetic vortex dynamics in a broken inversion symmetry system when the current density is on the order of 1010Am−2 and the current with frequency close to the vortex eigenfrequency is the most efficient for reversal.</description><identifier>ISSN: 0921-4526</identifier><identifier>EISSN: 1873-2135</identifier><identifier>DOI: 10.1016/j.physb.2016.11.037</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Alternating current ; Critical current density ; Ferrous alloys ; Frequencies ; Magnetism ; Rashba effect ; Spin-polarized current ; Symmetry ; Vortex switching ; Vortices</subject><ispartof>Physica. 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B, Condensed matter</title><description>Magnetic vortex dynamics mediated by spin-polarized ac current of different amplitudes and frequencies are investigated by micromagnetic simulations in a system lacking structure inversion symmetry. Micromagnetic calculations reveal that the critical current density required to induce vortex core reversal may be decreased to below 1010Am−2 due to strong transverse magnetic field by Rashba effect. We also find the spin torque of ac current plays a trivial role in magnetic vortex dynamics in a broken inversion symmetry system when the current density is on the order of 1010Am−2 and the current with frequency close to the vortex eigenfrequency is the most efficient for reversal.</description><subject>Alternating current</subject><subject>Critical current density</subject><subject>Ferrous alloys</subject><subject>Frequencies</subject><subject>Magnetism</subject><subject>Rashba effect</subject><subject>Spin-polarized current</subject><subject>Symmetry</subject><subject>Vortex switching</subject><subject>Vortices</subject><issn>0921-4526</issn><issn>1873-2135</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kE1PwzAMhiMEEmPwC7hU4twSN_1IDxwQgoE0BEJwjvLhsIwtHUmHVH49GeOML5Zlv7bfh5BzoAVQaC6XxWYxRlWUqSgACsraAzIB3rK8BFYfkgntSsirumyOyUmMS5oCWpiQ2aN89zi4bzm43mdm9HLtdMycN1uNJlNj9iLjQskMrUU9pEYms2cMa7la9WPmpe-Nix-n5MjKVcSzvzwlb3e3rzf3-fxp9nBzPc91yWHIrVS1NaiUtpJVHC2XLdWqbkwnW0VN-goqLKXSvDJUIa95VSuGnDWp1dRsSi72ezeh_9xiHMSy3wafTgroqo52DEqWpth-Soc-xoBWbIJbyzAKoGJHTCzFLzGxIyYARCKWVFd7FSYDXw6DiNqhTxhcSNaF6d2_-h9RjnXr</recordid><startdate>20170215</startdate><enddate>20170215</enddate><creator>Li, Huanan</creator><creator>Hua, Zhong</creator><creator>Li, Dongfei</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20170215</creationdate><title>Magnetization dynamics induced by Rashba effect in a Permalloy nanodisk</title><author>Li, Huanan ; Hua, Zhong ; Li, Dongfei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c281t-fab5fdebbcfa348ef8a70cb56d9a7b0d00114e2abc84d0be85845b3e836001653</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Alternating current</topic><topic>Critical current density</topic><topic>Ferrous alloys</topic><topic>Frequencies</topic><topic>Magnetism</topic><topic>Rashba effect</topic><topic>Spin-polarized current</topic><topic>Symmetry</topic><topic>Vortex switching</topic><topic>Vortices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Huanan</creatorcontrib><creatorcontrib>Hua, Zhong</creatorcontrib><creatorcontrib>Li, Dongfei</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. B, Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Huanan</au><au>Hua, Zhong</au><au>Li, Dongfei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetization dynamics induced by Rashba effect in a Permalloy nanodisk</atitle><jtitle>Physica. B, Condensed matter</jtitle><date>2017-02-15</date><risdate>2017</risdate><volume>507</volume><spage>114</spage><epage>118</epage><pages>114-118</pages><issn>0921-4526</issn><eissn>1873-2135</eissn><abstract>Magnetic vortex dynamics mediated by spin-polarized ac current of different amplitudes and frequencies are investigated by micromagnetic simulations in a system lacking structure inversion symmetry. Micromagnetic calculations reveal that the critical current density required to induce vortex core reversal may be decreased to below 1010Am−2 due to strong transverse magnetic field by Rashba effect. We also find the spin torque of ac current plays a trivial role in magnetic vortex dynamics in a broken inversion symmetry system when the current density is on the order of 1010Am−2 and the current with frequency close to the vortex eigenfrequency is the most efficient for reversal.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physb.2016.11.037</doi><tpages>5</tpages></addata></record> |
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subjects | Alternating current Critical current density Ferrous alloys Frequencies Magnetism Rashba effect Spin-polarized current Symmetry Vortex switching Vortices |
title | Magnetization dynamics induced by Rashba effect in a Permalloy nanodisk |
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