Sign-reversal superconducting gaps revealed by phase-referenced quasiparticle interference of impurity-induced bound states in (Li1−xFex)OHFe1−yZnySe
| العنوان: | Sign-reversal superconducting gaps revealed by phase-referenced quasiparticle interference of impurity-induced bound states in (Li1−xFex)OHFe1−yZnySe |
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| المؤلفون: | Hai-Hu Wen, Qiangqiang Gu, Hai Lin, Zengyi Du, Qingkun Tang, Qiang-Hua Wang, Siyuan Wan, Xiyu Zhu, Huan Yang, Xiong Yang |
| المصدر: | Physical Review B. 98 |
| بيانات النشر: | American Physical Society (APS), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Physics, Superconductivity, Condensed matter physics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, law.invention, Atomic orbital, Impurity, law, Condensed Matter::Superconductivity, 0103 physical sciences, Bound state, Quasiparticle, Scanning tunneling microscope, 010306 general physics, 0210 nano-technology, Spectroscopy, Sign (mathematics) |
| الوصف: | It is very important, but not easy, to determine the superconducting gap function in unconventional superconductors. The key issue concerns whether there is a sign change in the gap function. In iron-based superconductors, this becomes even more difficult due to the complexity of multiple Fe 3$d$ orbitals. Here, the authors adopt a recently proposed method -- phase-referenced quasiparticle interference (QPI) of defect-bound states (DBS) via scanning tunneling microscope/spectroscopy -- and visualize directly the gap sign change of the superconducting gaps in the iron-based superconductor (Li${}_{1\ensuremath{-}x}$Fe${}_{x}$)OHFe${}_{1\ensuremath{-}y}$Zn${}_{y}$Se. This work provides an easy and feasible way for detecting the gap function of unconventional superconductors. |
| تدمد: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.98.134503 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::30924b1461ebdf35acd178a08cee8320 https://doi.org/10.1103/physrevb.98.134503 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........30924b1461ebdf35acd178a08cee8320 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24699969 24699950 |
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| DOI: | 10.1103/physrevb.98.134503 |