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 |
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論文番号 | 152110 |
ジャーナル | Applied Physics Letters |
巻 | 95 |
号 | 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)