We report the epitaxial growth of Ruddlesden–Popper nickelates, Lan+1NinO3n+1, with n up to 5 by reactive molecular beam epitaxy. X-ray diffractions indicate high crystalline quality of these films, and transport measurements show strong dependence on the n values. Angle-resolved photoemission spectroscopy reveals the electronic structure of La5Ni4O13, showing a large hole-like pocket centered around the Brillouin zone corner with a (π, π) back-folded copy.

中文翻译：

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Ruddlesden–Popper 镍酸盐的外延生长和电子结构 (Lan+1NinO3n+1, n = 1–5)

我们报告了 Ruddlesden-Popper 镍酸盐的外延生长，Lan+1NinO3n+1，通过反应分子束外延使 n 达到 5。X 射线衍射表明这些薄膜具有高结晶质量，并且传输测量显示对 n 值的强烈依赖性。角度分辨光电子能谱揭示了 La5Ni4O13 的电子结构，显示了一个以布里渊区角为中心的大孔状口袋，带有 (π, π) 后折叠副本。