Ba（Fe1-xRhx）2As 2超导体过掺杂区慢涨落的持续性
Persistence of slow fluctuations in the overdoped regime of Ba(Fe1-xRhx)2As2 superconductors
摘要：
我们提出的核磁共振证据表明，非常缓慢（$\leq 1$ MHz）的自旋波动持续到过掺杂制度的Ba（Fe $_{1-x}$ Rh $_{x}$）$_2$ As $_2$超导体。测量的$^{75}$作为自旋回波衰减率，获得与哈恩回声和卡尔珀塞尔Meiboom吉尔脉冲序列，表明自旋波动的放缓可以描述的短程扩散动力学，可能涉及域壁运动分离$(π/a,0)$从$(0,π/a)$相关区域。这种波动的减慢对外部磁场弱敏感，并且尽管随着掺杂而逐渐消失，但它深入地延伸到过掺杂区域。
英文摘要：
We present nuclear magnetic resonance evidence that very slow ($\leq 1$ MHz) spin fluctuations persist into the overdoped regime of Ba(Fe$_{1-x}$Rh$_{x}$)$_2$As$_2$ superconductors. Measurements of the $^{75}$As spin echo decay rate, obtained both with Hahn Echo and Carr Purcell Meiboom Gill pulse sequences, show that the slowing down of spin fluctuations can be described by short-range diffusive dynamics, likely involving domain walls motions separating $(π/a,0)$ from $(0,π/a)$ correlated regions. This slowing down of the fluctuations is weakly sensitive to the external magnetic field and, although fading away with doping, it extends deeply into the overdoped regime.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
