تقرير
Electronic phase diagram in Te-annealed superconducting FeTe$_{1-x}$Se$_x$ revealed by magnetic susceptibility
| العنوان: | Electronic phase diagram in Te-annealed superconducting FeTe$_{1-x}$Se$_x$ revealed by magnetic susceptibility |
|---|---|
| المؤلفون: | Fujii, Takenori, Uezono, Yu, Otsuka, Takumi, Hagisawa, Shotaro, Watanabe, Takao |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | Knowledge of the doping (x)-temperature (T) phase diagram of Fe-based superconductors is crucial in understanding the mechanism of high transition temperature superconductivity. Here, we measured the Se doping dependence of the magnetic susceptibility for Te-annealed FeTe$_{1-x}$Se$_x$. Two characteristic temperatures $T^*_{\chi}$ and $T^{**}_{\chi}$ were observed in the temperature dependence of magnetic susceptibility, where the magnetic susceptibility decreased below T$^{**}_{\chi}$ and tended to increase with further decreasing temperature below T$^*_{\chi}$. The decrease in magnetic susceptibility below T$^{**}_{\chi}$ is considered to be due to the opening of the pseudogap. Whereas the increase in magnetic susceptibility below T$^*_{\chi}$ is attributed to the increase in the carrier concentration of electrons. Furthermore, we found the large superconducting fluctuation, which may be related to BCS-BEC crossover. Comment: 6 pages, 3 figures. to be published in JPS Conference Proceedings |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.7566/JPSCP.38.011027 |
| URL الوصول: | http://arxiv.org/abs/2211.05355 |
| رقم الأكسشن: | edsarx.2211.05355 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.7566/JPSCP.38.011027 |
|---|