| dbo:abstract |
Some antiferromagnetic materials exhibit a non-zero magnetic moment at a temperature near absolute zero. This effect is ascribed to spin canting, a phenomenon through which spins are tilted by a small angle about their axis rather than being exactly co-parallel. Spin canting is due to two factors contrasting each other: would align the spins exactly antiparallel, while antisymmetric exchange arising from relativistic effects (spin–orbit coupling) would align the spins at 90° to each other. The net result is a small perturbation, the extent of which depends on the relative strength of these effects. This effect is observable in many materials such as hematite. (en) 一些反铁磁材料在接近绝对零度的温度下表现出非零磁矩。这种效应归因于自旋倾斜，通过这种现象，自旋绕其轴线倾斜一个小角度而不是精确地共线。 自旋倾斜是由于两个因素相互竞争形成的：各向同性交换将使自旋反平行，而由相对论效应（自旋轨道耦合）引起的反对称交换将使自旋彼此呈90°。 其最终结果是形成了一个微小的扰动，而其程度取决于所受的影响的相对强度。 在许多族群中可以观察到这种效应，如赤铁矿。 (zh) |
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wiki-commons:Special:FilePath/Dzyloshinskii_Moriya_antisymmetric_exchange.jpg?width=300 |
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dbc:Magnetic_ordering dbr:Antisymmetric_exchange dbc:Spintronics dbr:Antiferromagnetic dbr:Magnetic_moment dbr:Hematite dbr:Absolute_zero dbr:Spin–orbit_coupling dbr:File:Dzyloshinskii_Moriya_antisymmetric_exchange.jpg dbr:Isotropic_exchange |
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dbt:Reflist |
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dbc:Magnetic_ordering dbc:Spintronics |
| rdfs:comment |
一些反铁磁材料在接近绝对零度的温度下表现出非零磁矩。这种效应归因于自旋倾斜，通过这种现象，自旋绕其轴线倾斜一个小角度而不是精确地共线。 自旋倾斜是由于两个因素相互竞争形成的：各向同性交换将使自旋反平行，而由相对论效应（自旋轨道耦合）引起的反对称交换将使自旋彼此呈90°。 其最终结果是形成了一个微小的扰动，而其程度取决于所受的影响的相对强度。 在许多族群中可以观察到这种效应，如赤铁矿。 (zh) Some antiferromagnetic materials exhibit a non-zero magnetic moment at a temperature near absolute zero. This effect is ascribed to spin canting, a phenomenon through which spins are tilted by a small angle about their axis rather than being exactly co-parallel. This effect is observable in many materials such as hematite. (en) |
| rdfs:label |
Spin canting (en) 自旋倾斜 (zh) |
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freebase:Spin canting wikidata:Spin canting dbpedia-zh:Spin canting https://global.dbpedia.org/id/4vcbz |
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wikipedia-en:Spin_canting?oldid=1114268976&ns=0 |
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dbr:Antiferromagnetism dbr:Antisymmetric_exchange dbr:Orthoferrite dbr:Hematite dbr:Rock_magnetism |
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wikipedia-en:Spin_canting |
