• Corpus ID: 220250174

Nematic Fluctuations in an Orbital Selective Superconductor Fe$_{1+y}$Te$_{1-x}$Se$_{x}$

@article{Jiang2020NematicFI,
  title={Nematic Fluctuations in an Orbital Selective Superconductor Fe\$\_\{1+y\}\$Te\$\_\{1-x\}\$Se\$\_\{x\}\$},
  author={Qianni Jiang and Yue Shi and Morten H. Christensen and Joshua J. Sanchez and Bevin Huang and Zhong Lin and Zhaoyu Liu and Paul Malinowski and Xiaodong Xu and Rafael M. Fernandes and Jiun Haw Chu},
  journal={arXiv: Superconductivity},
  year={2020}
}
We present a systematic study of the nematic fluctuations in the iron chalcogenide superconductor Fe$_{1+y}$Te$_{1-x}$Se$_{x}$ ($0 \leq x \leq 0.53$) using the elastoresistivity technique. Near $x = 0$, in proximity to the double-stripe magnetic order of Fe$_{1+y}$Te, a diverging $B_{1g}$ nematic susceptibility is observed. Upon increasing $x$, despite the absence of magnetic order, the $B_{2g}$ nematic susceptibility increases and becomes dominant, closely following the strength of the $(\pi… 

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