تقرير
Evidence of nodes in the order parameter of the superconducting doped topological insulator Nb$_x$Bi$_2$Se$_3$ via penetration depth measurements
| العنوان: | Evidence of nodes in the order parameter of the superconducting doped topological insulator Nb$_x$Bi$_2$Se$_3$ via penetration depth measurements |
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| المؤلفون: | Smylie, M. P., Claus, H., Welp, U., Kwok, W. -K., Qiu, Y., Hor, Y. S., Snezhko, A. |
| المصدر: | Phys. Rev. B 94, 180510 (2016) |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | The low-temperature variation of the London penetration depth $\lambda (T)$ in the candidate topological superconductor Nb$_x$Bi$_2$Se$_3$ (x = 0.25) is reported for several crystals. The measurements were carried out by means of a tunnel-diode oscillator (TDO) technique in both field orientations ($H_{rf} \parallel$ $c$ and $H_{rf} \parallel$ $ab$ planes). All samples exhibited power law behavior at low temperatures ($\Delta\lambda\sim T^2$) clearly indicating the presence of point nodes in the superconducting order parameter. The results presented here are consistent with a nematic odd-parity spin-triplet $E_u$ pairing state in Nb$_x$Bi$_2$Se$_3$. Comment: 6 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.94.180510 |
| URL الوصول: | http://arxiv.org/abs/1608.08164 |
| رقم الأكسشن: | edsarx.1608.08164 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.94.180510 |
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