{"id":13647,"date":"2024-12-05T15:23:23","date_gmt":"2024-12-05T14:23:23","guid":{"rendered":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/?p=13647"},"modified":"2024-12-09T11:30:24","modified_gmt":"2024-12-09T10:30:24","slug":"thesis-defence-13","status":"publish","type":"post","link":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/2024\/12\/05\/thesis-defence-13\/","title":{"rendered":"Thesis defence"},"content":{"rendered":"

Title<\/strong> : Impact of Interactions on Magnon Transport
\n<\/b><\/p>\n\n\n\n\n
Abstract:<\/b><\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
In this Thesis, we investigate how the interactions of magnons affect the transport of electrons and magnons in selected magnetic materials. In particular, we study the impact of the magnon-magnon and the magnon-electron interactions on thetopology and transport in ferromagnets and antiferromagnets. The magnon-magnon interaction has drawn much attention as it can either be detrimental or enhance the properties of topological magnonic systems. We focus on the honeycomb antiferromagnet, which exhibits longitudinal and transverse transport, and we study the effect of multi-magnon interactions on their transport and stability. Furthermore, in magnetic metals, the magnons are expected to interact with electrons, inducing the transfer of momentum and spin between the quasiparticles. This relation hasyet to be deeply investigated, particularly in materials with a non-trivial topology compared to the much-studied phonon-electron interaction. First, we focus on the magnon-electron interaction in ferromagnetic Weyl semimetals, where the transport \u00a0is directly interlinked with the topology. We find out that this interaction can bothenhance and destroy topology at higher temperatures. Finally, our focus shifts to a distinct class of magnetic materials with momentum-dependent spin splitting but total magnetization equal to zero, dubbed altermagnets. Altermagnets have drawn \u00a0attention because they can be used to generate spin currents efficiently, even in theabsence of spin-orbit coupling. By focusing on the magnon-electron interaction in these materials, we find that electrons that possess altermagnetic splitting can imprint their properties to trivial magnons and induce magnon spin currents with distinct \u00a0features. Overall, magnon-magnon and magnon-electron interactions can impact the properties of magnetic materials with heavy\u00a0 temperature dependence, making their evaluation in materials necessary.<\/div>\n
<\/div>\n
\n

Members of jury:
\n<\/b><\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n
M. AURELIEN\u00a0MANCHON<\/td>\nAix Marseille Universit\u00e9<\/td>\nThesis Director<\/td>\n<\/tr>\n
M. Alexander\u00a0MOOK<\/td>\nJohannes Gutenberg-Universit\u00e4t Mainz<\/td>\nReviewer<\/td>\n<\/tr>\n
M. Paul\u00a0MC CLARTY<\/td>\nLaboratoire Leon Brillouin, CNRS<\/td>\nReviewer<\/td>\n<\/tr>\n
Ms. Laura\u00a0MESSIO<\/td>\nSorbonne Universit\u00e9<\/td>\nExaminer<\/td>\n<\/tr>\n
Ms. Roser\u00a0VALENTI<\/td>\nInstitut f\u00fcr Theoretische Physik, Goethe-Universit\u00e4t Frankfurt am Main<\/td>\nExaminer<\/td>\n<\/tr>\n
M. Beno\u00eet\u00a0GR\u00e9MAUD<\/td>\nCentre de Physique Th\u00e9orique, CNRS, Aix-Marseille Universite<\/td>\nPresident<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Sourounis Konstantinos willl speak on December 16, 2024, at 2:00 PM, in the Raymond Kern room at CINaM<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts\/13647"}],"collection":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/comments?post=13647"}],"version-history":[{"count":3,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts\/13647\/revisions"}],"predecessor-version":[{"id":13656,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts\/13647\/revisions\/13656"}],"wp:attachment":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/media?parent=13647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/categories?post=13647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/tags?post=13647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}