论文标题
实验证据表明Zn杂质PIN配对密度波订单在la $ _ {2-x} $ ba $ _x $ cuo $ _4 $
Experimental Evidence that Zn Impurities Pin Pair-Density-Wave Order in La$_{2-x}$Ba$_x$CuO$_4$
论文作者
论文摘要
已经观察到Zn掺杂和$ C $轴磁场，以增加la $ _ {2-x} $ ba $ _x $ _x $ cuo $ _4 $的旋转条纹顺序，$ x $接近1/8。对于$ x = 0.095 $，应用的磁场还会导致超导层解次，大概是通过偏爱配对密度波顺序，从而使层间层的约瑟夫森耦合感到沮丧。在这里，我们表明，引入1％的Zn还导致二维（2D）超导性的初始发作，然后在较低温度下，即使在零场中也有3D超导性。我们推断Zn Pins配对密度波在本地建立了这种行为的一般性。
Both Zn-doping and $c$-axis magnetic fields have been observed to increase the spin stripe order in La$_{2-x}$Ba$_x$CuO$_4$ with $x$ close to 1/8. For $x=0.095$, the applied magnetic field also causes superconducting layers to decouple, presumably by favoring pair-density-wave order that consequently frustrates interlayer Josephson coupling. Here we show that introducing 1% Zn also leads to an initial onset of two-dimensional (2D) superconductivity, followed by 3D superconductivity at lower temperatures, even in zero field. We infer that the Zn pins pair-density-wave order locally, establishing the generality of such behavior.
