تقرير
Large Magnetoresistance and Nontrivial Berry Phase in Nb3Sb Crystals with A15 Structure
| العنوان: | Large Magnetoresistance and Nontrivial Berry Phase in Nb3Sb Crystals with A15 Structure |
|---|---|
| المؤلفون: | Chen, Qin, Zhou, Yuxing, Xu, Binjie, Lou, Zhefeng, Chen, Huancheng, Chen, Shuijin, Wu, Chunxiang, Du, Jianhua, Wang, Hangdong, Yang, Jinhu, Fang, Minghu |
| المصدر: | CHIN. PHYS. LETT. Vol. 38, No. 8 (2021) 087501 |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | Compounds with the A15 structure have attracted extensive attention due to their superconductivity and nontrivial topological band structure. We have successfully grown Nb$_3$Sb single crystals with a A15 structure and systematically measured the longitudinal resistivity, Hall resistivity and quantum oscillations in magnetization. Similar to other topological trivial/nontrivial semimetals, Nb$_3$Sb, exhibits large magnetoresistance (MR) at low temperatures (717$\%$, 2 K and 9 T), unsaturating quadratic field dependence of MR and up-turn behavior in $\rho_{xx}$(\emph{T}) curves under magnetic field, which is considered to result from a perfect hole-electron compensation, as evidenced by the Hall resistivity measurements. The nonzero Berry phase obtained from the de-Hass van Alphen (dHvA) oscillations demonstrates that Nb$_3$Sb is topologically nontrivial. These results indicate that Nb$_{3}$Sb superconductor is also a semimetal with large MR and nontrivial Berry phase, indicating that Nb$_{3}$Sb may be another platform to search for Majorana zero-energy mode. Comment: 5 pages, 5 figures. arXiv admin note: text overlap with arXiv:2007.04814, arXiv:2104.03799 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/0256-307X/38/8/087501 |
| URL الوصول: | http://arxiv.org/abs/2107.14689 |
| رقم الأكسشن: | edsarx.2107.14689 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/0256-307X/38/8/087501 |
|---|