Broad linewidth of antiferromagnetic spin wave due to electron correlation
森 道康
Mori, Michiyasu
We study magnetic excitations in a bilayer of antiferromagnetic (AF) insulator and correlated metal, in which the double occupancy is forbidden. Effective action of AF spinwave in the AF insulator is derived by using the path integral formula within the second order of an inter-plane coupling. The electrons correlation in the metallic plane is treated by the Gutzwiller approximation, which renormalizes the hopping integrals as proportional to hole density. Remarkable is that the AF magnons are broaden at low energies, only when the metallic planes includes correlation effect. The present results will be useful also to another bilayer of metal and ferrimagnet.
使用言語 : English
掲載資料名 : Journal of the Physical Society of Japan
: 86
: 12
ページ数 : p.124705_1 - 124705_7
発行年月 : 2017/12
出版社名 : 日本物理学会
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登録番号 : AA20170359
抄録集掲載番号 : 45001326
論文投稿番号 : 19552
Accesses  (From Jun. 2, 2014)
- Accesses
分野:Physics, Multidisciplinary
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