Axion-matter coupling in multiferroicsShow others and affiliations
2021 (English)In: Physical Review Research, E-ISSN 2643-1564, Vol. 3, no 3, article id 033236Article in journal (Refereed) Published
Abstract [en]
Multiferroics (MFs) are materials with two or more ferroic orders, like spontaneous ferroelectric and ferromagnetic polarizations. Such materials can exhibit a magnetoelectric effect whereby magnetic and ferroelectric polarizations couple linearly, reminiscent of, but not identical to the electromagnetic E . B axion coupling. Here we point out a possible mechanism in which an external dark matter axion field couples linearly to ferroic orders in these materials without external applied fields. We find the magnetic response to be linear in the axion-electron coupling. At temperatures close to the ferromagnetic transition fluctuations can lead to an enhancement of the axion-induced magnetic response. Relevant material candidates such as the Lu-Sc hexaferrite family are discussed.
Place, publisher, year, edition, pages
American Physical Society (APS) , 2021. Vol. 3, no 3, article id 033236
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-302603DOI: 10.1103/PhysRevResearch.3.033236ISI: 000695729100007Scopus ID: 2-s2.0-85115889265OAI: oai:DiVA.org:kth-302603DiVA, id: diva2:1606532
Note
QC 20211027
2021-10-272021-10-272023-01-02Bibliographically approved