Chemical stability and transport properties of ultrathin La1.2 Sr1.8 Mn2 O7 Ruddlesden-Popper films

M. Matvejeff, K. Yoshimatsu, H. Kumigashira, M. Oshima, M. Lippmaa

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Epitaxial La1.2 Sr1.8 Mn2 O7 films with n=2 Ruddlesden-Popper structure were grown on SrTiO3 (001) substrates. Decomposition through water intercalation led to the disappearance of the metal-insulator transition in samples exposed to ambient atmosphere. Crystal damage was limited to the surface layer only, demonstrating the anisotropic nature of the water intercalation process. By protecting films with a SrTiO3 capping layer, the metal-insulator transition persisted down to 2.5 unit cell thick films. In thinner films, we propose a mechanism related to the loss of interlayer ferromagnetic order in favor of in-plane antiferromagnetism as a reason for the loss of the metallic state.

本文言語English
論文番号152110
ジャーナルApplied Physics Letters
95
15
DOI
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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