English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Motivated by recent experimental findings, we investigate the evolution of the superconducting gap anisotropy in 122 iron pnictides as a function of hole doping. Employing both a functional and a weak coupling renormalization group approach (FRG and WRG), we analyze the Fermi surface instabilities of an effective 122 model band structure at different hole dopings  x , and derive the gap anisotropy from the leading superconducting instability. In the transition regime from collinear magnetism to    s  ±   ‐wave, where strong correlations are present, we employ FRG to identify a non‐monotonous change of the gap anisotropy in qualitative agreement with new experimental findings. From the WRG, which is asymptotically exact in the weak coupling limit, we find an    s  ±   ‐wave to  d ‐wave transition as a function of hole doping, complementing previous findings from FRG [Thomale et al., Phys. Rev. Lett.  107 , 117001 (2011)]. The gap anisotropy of the    s  ±   ‐wave monotonously increases towards the transition to  d ‐wave as a function of  x .

Evolution of superconducting gap anisotropy in hole‐doped 122 iron pnictides