2026-06-03T07:08:35Z https://archive.materialscloud.org/oai2d

oai:materialscloud.org:955 2021-07-23T11:10:23Z openaire_data community-mcarchive

Bhowal, Sayantika Spaldin, Nicola A. Bhowal, Sayantika Spaldin, Nicola A. 2021-07-23 Magneto-electric multipoles, which are odd under both space-inversion 𝓘 and time-reversal 𝓣 symmetries, are fundamental in understanding and characterizing magneto-electric materials. However, the detection of these magneto-electric multipoles is often not straightforward as they remain "hidden" in conventional experiments in part since many magneto-electrics exhibit combined 𝓘𝓣 symmetry. In the present work, we show that the anti-symmetric Compton profile is a unique signature for all the magneto-electric multipoles, since the asymmetric magnetization density of the magneto-electric multipoles couples to space via spin-orbit coupling, resulting in an anti-symmetric Compton profile. We develop the key physics of the anti-symmetric Compton scattering using symmetry analysis and demonstrate it using explicit first-principles calculations for two well-known representative materials with magneto-electric multipoles, insulating LiNiPO₄ and metallic Mn₂Au. Our work emphasizes the crucial roles of the orientation of the spin moments, the spin-orbit coupling, and the band structure in generating the anti-symmetric Compton profile in magneto-electric materials. application/zip text/plain text/markdown https://doi.org/10.24435/materialscloud:wc-5z oai:materialscloud.org:955 mcid:2021.117 eng Materials Cloud https://doi.org/10.1103/PhysRevResearch.3.033185 https://journals.aps.org/prresearch/pdf/10.1103/PhysRevResearch.3.033185 https://archive.materialscloud.org/communities/mcarchive https://doi.org/10.24435/materialscloud:rr-a7 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Magneto-electric multipoles Compton scattering density-functional theory LiNiPO4 Mn2Au ERC H2020 Horizon Europe Revealing hidden magneto-electric multipoles using Compton scattering info:eu-repo/semantics/other