Ferromagnetic Peierls insulator state in AMg4Mn6 O15 (A= K,Rb,Cs)

T. Yamaguchi, K. Sugimoto, Y. Ohta, Y. Tanaka, H. Sato

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Using the density-functional-theory-based electronic structure calculations, we study the electronic state of recently discovered mixed-valent manganese oxides AMg4Mn6O15(A=K,Rb,Cs), which are fully spin-polarized ferromagnetic insulators with a cubic crystal structure. We show that the system may be described as a three-dimensional arrangement of the one-dimensional chains of a 2p orbital of O and a 3d orbital of Mn running along the three axes of the cubic lattice. We thereby argue that in the ground state the chains are fully spin polarized due to the double-exchange mechanism and are distorted by the Peierls mechanism to make the system insulating.

本文言語English
論文番号161103
ジャーナルPhysical Review B
97
16
DOI
出版ステータスPublished - 2018 4月 5
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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