Dopant Clustering, Electronic Inhomogeneity, and Vortex Pinning in Iron-Based Superconductors

We use scanning tunneling microscopy to map the surface structure, nanoscale electronic inhomogeneity, and vitreous vortex phase in the hole-doped superconductor Sr\(_{0.75}\)K\(_{0.25}\)Fe\(_2\)As\(_2\) with \(T_c\)=32 K. We find the low-\(T\) cleaved surface is dominated by a half-Sr/K termination...

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Veröffentlicht in:	arXiv.org 2013-07
Hauptverfasser:	Can-Li, Song, Yin, Yi, Zech, Martin, Williams, Tess, Yee, Michael, Gen-Fu, Chen, Jian-Lin, Luo, Nan-Lin, Wang, Hudson, Eric W, Hoffman, Jennifer E
Format:	Artikel
Sprache:	eng
Schlagworte:	Clustering Coherence length Dopants Inhomogeneity Iron Physics - Superconductivity Pinning Superconductivity Surface structure Vortices
Online-Zugang:	Volltext
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