我们能否防止锰氧化物界面处“死层”的形成？
Can we prevent the "dead layer" formation at manganite interfaces?
摘要：
本文从理论上研究了在锰氧化物超晶格中阻止界面“死”层形成的可能性。我们发现，这一目标可以通过使用碱土金属简单氧化物作为非常薄的超晶格中的交替层来实现。事实上，这种交替层促进了界面处的锰氧化物层的收缩和$d_{x^2-y^2}$优选的$e_g$轨道占据，而玻尔兹曼的输运计算显示电导率增加。这一结果适用于不同的锰氧化物、不同的碱土金属简单氧化物以及不同的两层厚度。
英文摘要：
The present work theoretically studies the possibility to hinder the formation of a "dead" layer at the interfaces in manganite superlattices. We showed that this goal can be reached by using alkaline-earth simple oxides as alternating layers in very thin superlattices. Indeed, such alternating layer promotes the contraction of manganite layers at the interfaces and $d_{x^2-y^2}$ preferred $e_g$ orbital occupancy, while Boltzman's transport calculations show an increase in conductivity. This result hold for different manganites, different alkaline-earth simple oxides as well as different thicknesses of the two layers.
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