论文标题
重新访问t*-type la $ _ {1-x/2}的相图
Revisiting the phase diagram of T*-type La$_{1-x/2}$Eu$_{1-x/2}$Sr$_x$CuO$_4$ using Oxygen $K$-edge X-ray absorption spectroscopy
论文作者
论文摘要
氧$ k $ - 边缘X射线吸收光谱测量进行了T*-Type la $ _ {1-x/2} $ _ {1-x/2} $ _ {1-x/2} $ _x $ _x $ _x $ _x $ cuo $ $ _4 $（LESCO），以估算孔（$ n _} $ n _} $ n _ { $ n _ {\ rm h} $。发现由于退火而引起的$ n _ {\ rm h} $的急剧增加。 $ n _ {\ rm h} $的增加不能完全通过退火而产生的氧气增益来解释，这表明将离域孔引入了CUO $ _2 $平面。 LESCO的相图被重新绘制为$ n _ {\ rm H} $。
Oxygen $K$-edge X-ray absorption spectroscopy measurements were conducted on T*-type La$_{1-x/2}$Eu$_{1-x/2}$Sr$_x$CuO$_4$ (LESCO) to estimate the hole density ($n_{\rm h}$) and investigate the oxidation annealing effect on $n_{\rm h}$. A drastic increase in $n_{\rm h}$ due to annealing was found. The increase in $n_{\rm h}$ cannot be explained solely by the oxygen gain due to annealing, suggesting that delocalized holes are introduced into the CuO$_2$ plane. A phase diagram of LESCO was redrawn against $n_{\rm h}$.
