四方性诱导的具有Bi方网的anti-ThCr PDMATHAAB Si PDMATHAAB型$RE_2$ O $_2$ Bi（$RE$ =稀土）的超导电性
Tetragonality induced superconductivity in anti-ThCr$_2$Si$_2$-type $RE_2$O$_2$Bi ($RE$ = rare earth) with Bi square net
摘要：
我们报道了一系列层状超导体，反ThCr $_2$ Si $_2$型$RE_2$ O $_2$ Bi（$RE$ =稀土），由导电的Bi方网和磁绝缘的$RE_2$ O $_2$层组成.超导电性诱导分离Bi方网作为一个结果，过量的氧掺入，不管磁有序的存在下，在$RE_2$ O $_2$层。有趣的是，所有的$RE_2$ O $_2$ Bi，包括双Y $_2$ O $_2$ Bi的转变温度近似由单位晶胞四方性（$c$ / $a$）标度，这意味着Bi方网的相对分离诱导超导电性的关键作用。
英文摘要：
We report a series of layered superconductors, anti-ThCr$_2$Si$_2$-type $RE_2$O$_2$Bi ($RE$ = rare earth), composed of electrically conductive Bi square nets and magnetic insulating $RE_2$O$_2$ layers. The superconductivity was induced by separating Bi square nets as a result of excess oxygen incorporation, irrespective of the presence of magnetic ordering in $RE_2$O$_2$ layers. Intriguingly, the transition temperature of all $RE_2$O$_2$Bi including nonmagnetic Y$_2$O$_2$Bi was approximately scaled by the unit cell tetragonality ($c$/$a$), implying a key role of relative separation of the Bi square nets to induce the superconductivity.
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