Revealing hidden magnetoelectric multipoles using Compton scattering
Magnetoelectric multipoles, which are odd under both space-inversion I and time-reversal T symmetries, are fundamental in understanding and characterizing magnetoelectric materials. However, the detection of these magnetoelectric multipoles is often not straightforward as they remain “hidden” in con...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2021-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.033185 |
| _version_ | 1797210959321759744 |
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| author | Sayantika Bhowal Nicola A. Spaldin |
| author_facet | Sayantika Bhowal Nicola A. Spaldin |
| author_sort | Sayantika Bhowal |
| collection | DOAJ |
| description | Magnetoelectric multipoles, which are odd under both space-inversion I and time-reversal T symmetries, are fundamental in understanding and characterizing magnetoelectric materials. However, the detection of these magnetoelectric multipoles is often not straightforward as they remain “hidden” in conventional experiments in part since many magnetoelectrics exhibit combined IT symmetry. In this paper, we show that the antisymmetric Compton profile is a unique signature for all the magnetoelectric multipoles, since the asymmetric magnetization density of the magnetoelectric multipoles couples to space via spin-orbit coupling, resulting in an antisymmetric Compton profile. We develop the key physics of the antisymmetric Compton scattering using symmetry analysis and demonstrate it using explicit first-principles calculations for two well-known representative materials with magnetoelectric multipoles, insulating LiNiPO_{4} and metallic Mn_{2}Au. Our work emphasizes the crucial roles of the orientation of the spin moments, the spin-orbit coupling, and the band structure in generating the antisymmetric Compton profile in magnetoelectric materials. |
| first_indexed | 2024-04-24T10:18:53Z |
| format | Article |
| id | doaj.art-d41b56e618104cf6a97cee53a6c3d56e |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:18:53Z |
| publishDate | 2021-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-d41b56e618104cf6a97cee53a6c3d56e2024-04-12T17:13:15ZengAmerican Physical SocietyPhysical Review Research2643-15642021-08-013303318510.1103/PhysRevResearch.3.033185Revealing hidden magnetoelectric multipoles using Compton scatteringSayantika BhowalNicola A. SpaldinMagnetoelectric multipoles, which are odd under both space-inversion I and time-reversal T symmetries, are fundamental in understanding and characterizing magnetoelectric materials. However, the detection of these magnetoelectric multipoles is often not straightforward as they remain “hidden” in conventional experiments in part since many magnetoelectrics exhibit combined IT symmetry. In this paper, we show that the antisymmetric Compton profile is a unique signature for all the magnetoelectric multipoles, since the asymmetric magnetization density of the magnetoelectric multipoles couples to space via spin-orbit coupling, resulting in an antisymmetric Compton profile. We develop the key physics of the antisymmetric Compton scattering using symmetry analysis and demonstrate it using explicit first-principles calculations for two well-known representative materials with magnetoelectric multipoles, insulating LiNiPO_{4} and metallic Mn_{2}Au. Our work emphasizes the crucial roles of the orientation of the spin moments, the spin-orbit coupling, and the band structure in generating the antisymmetric Compton profile in magnetoelectric materials.http://doi.org/10.1103/PhysRevResearch.3.033185 |
| spellingShingle | Sayantika Bhowal Nicola A. Spaldin Revealing hidden magnetoelectric multipoles using Compton scattering Physical Review Research |
| title | Revealing hidden magnetoelectric multipoles using Compton scattering |
| title_full | Revealing hidden magnetoelectric multipoles using Compton scattering |
| title_fullStr | Revealing hidden magnetoelectric multipoles using Compton scattering |
| title_full_unstemmed | Revealing hidden magnetoelectric multipoles using Compton scattering |
| title_short | Revealing hidden magnetoelectric multipoles using Compton scattering |
| title_sort | revealing hidden magnetoelectric multipoles using compton scattering |
| url | http://doi.org/10.1103/PhysRevResearch.3.033185 |
| work_keys_str_mv | AT sayantikabhowal revealinghiddenmagnetoelectricmultipolesusingcomptonscattering AT nicolaaspaldin revealinghiddenmagnetoelectricmultipolesusingcomptonscattering |