论文标题
压力引起的磁性磁性在基于铁的超导体中$ a $ fe $ _2 $ as $ _2 $（$ a = $ a = $ k，cs，rb）
Pressure-induced magnetism in iron-based superconductors $A$Fe$_2$As$_2$ ($A=$ K, Cs, Rb)
论文作者
论文摘要
基于铁的超导体$ a $ fe $ _2 $ AS $ _2 $（$ a = $ a = $ a = $ k，cs和rb）的磁性特征在于临界温度（$ t _ {\ rm c} $）对压力（$ t _ {\ rm c} $）的依赖性（$ t _ {\ rm c} $）在压力上（$ p $）的特征是通过MUON旋转/放松旋转/放松旋转技术来研究。在研究的所有三个系统中，发现磁性出现在略低于关键的系统（$ p _ {\ rm c} $）以下，即在压力下，其中$ t _ {\ rm c}（p）$都会改变斜率。 $ a $ _2 $ as $ _2 $中的磁性和超导率不是竞争，而是在$ p \ gtrsim p _ {\ rm c} $压力区域共存。我们的结果支持从一个配对状态到另一个配对状态的过渡的场景，在$ p _ {\ rm c} $的两侧具有不同的对称性。
The magnetic properties of iron-based superconductors $A$Fe$_2$As$_2$ ($A=$K, Cs, and Rb), which are characterized by the V-shaped dependence of the critical temperature ($T_{\rm c}$) on pressure ($P$) were studied by means of the muon spin rotation/relaxation technique. In all three systems studied the magnetism was found to appear for pressures slightly below the critical one ($P_{\rm c}$), i.e. at pressure where $T_{\rm c}(P)$ changes the slope. Rather than competing, magnetism and superconductivity in $A$Fe$_2$As$_2$ are coexisting at $P\gtrsim P_{\rm c}$ pressure region. Our results support the scenario of a transition from one pairing state to another, with different symmetries on either side of $P_{\rm c}$.
