Ab initio cycloidal and chiral magnetoelectric responses in Cr2 O3
We present a thorough density functional theory study of the magneto-electric (ME) effect in Cr2O3. The spin-lattice ME tensor α was determined in the low-field and spin flop (SF) phases, using the method of dynamical magnetic charges, and found to be the sum of three distinct components. Two of the...
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| Format: | Journal article |
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American Physical Society
2016
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| _version_ | 1826259585418133504 |
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| author | Tillack, N Yates, J Radaelli, P |
| author_facet | Tillack, N Yates, J Radaelli, P |
| author_sort | Tillack, N |
| collection | OXFORD |
| description | We present a thorough density functional theory study of the magneto-electric (ME) effect in Cr2O3. The spin-lattice ME tensor α was determined in the low-field and spin flop (SF) phases, using the method of dynamical magnetic charges, and found to be the sum of three distinct components. Two of them, a large relativistic "cycloidal" term and a small longitudinal term, are independent on the spin orientation. The third, only active in the SF phases is also of relativistic origin and arises from magnetic-field-induced chirality, leading to a non-toroidal ME response. |
| first_indexed | 2024-03-06T18:52:12Z |
| format | Journal article |
| id | oxford-uuid:109de9c8-de51-40c7-bfb0-44a2947ec068 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:52:12Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:109de9c8-de51-40c7-bfb0-44a2947ec0682022-03-26T09:57:27ZAb initio cycloidal and chiral magnetoelectric responses in Cr2 O3Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:109de9c8-de51-40c7-bfb0-44a2947ec068Symplectic Elements at OxfordAmerican Physical Society2016Tillack, NYates, JRadaelli, PWe present a thorough density functional theory study of the magneto-electric (ME) effect in Cr2O3. The spin-lattice ME tensor α was determined in the low-field and spin flop (SF) phases, using the method of dynamical magnetic charges, and found to be the sum of three distinct components. Two of them, a large relativistic "cycloidal" term and a small longitudinal term, are independent on the spin orientation. The third, only active in the SF phases is also of relativistic origin and arises from magnetic-field-induced chirality, leading to a non-toroidal ME response. |
| spellingShingle | Tillack, N Yates, J Radaelli, P Ab initio cycloidal and chiral magnetoelectric responses in Cr2 O3 |
| title | Ab initio cycloidal and chiral magnetoelectric responses in Cr2 O3 |
| title_full | Ab initio cycloidal and chiral magnetoelectric responses in Cr2 O3 |
| title_fullStr | Ab initio cycloidal and chiral magnetoelectric responses in Cr2 O3 |
| title_full_unstemmed | Ab initio cycloidal and chiral magnetoelectric responses in Cr2 O3 |
| title_short | Ab initio cycloidal and chiral magnetoelectric responses in Cr2 O3 |
| title_sort | ab initio cycloidal and chiral magnetoelectric responses in cr2 o3 |
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