论文标题
生命中没有列不稳定
Absence of nematic instability in LiFeAs
论文作者
论文摘要
基于铁的超导体（FESC）中非常规超导，抗磁性和列表之间的关系仍然高度争议。在许多FESC中，超导性在近距离和磁性状态的近端。生命值是一种特殊的化学计量计量法，不进行结构或磁过渡而在18 K以下的超导下降。然而，一些最近的实验研究表明存在有限的列型波动，甚至是列明超导状态。在这项研究中，我们采用弹性作为原始生命中列的列不断波动的一种度量，并将发现与低CO和V掺杂水平的生命值的弹性以及磁性和近似序列的Nafeas进行了比较。我们发现生命周期和钴掺杂的生命周期远离列不稳定。
The relationship between unconventional superconductivity, antiferromagnetism and nematic order in iron-based superconductors (FeSCs) is still highly debated. In many FeSCs superconductivity is in proximity of a nematically and magnetically ordered state. LiFeAs is an exceptional stoichiometric FeSC becoming superconducting below 18 K, without undergoing a structural or magnetic transition. However, some recent experimental studies suggested the existence of finite nematic fluctuations and even a nematic superconducting state. In this study, we employ elastoresistance as a measure of nematic fluctuations in pristine LiFeAs and compare the findings with the elastoresistance of LiFeAs at low Co and V doping levels as well with that of magnetically and nematically ordering NaFeAs. We find LiFeAs and cobalt-doped LiFeAs far away from a nematic instability.
