تقرير
Low field magnetic response of the non-centrosymmetric superconductor YPtBi
| العنوان: | Low field magnetic response of the non-centrosymmetric superconductor YPtBi |
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| المؤلفون: | Bay, T. V., Jackson, M., Paulsen, C., Baines, C., Amato, A., Orvis, T., Aronson, M. C., Huang, Y. K., de Visser, A. |
| المصدر: | Solid State Communications 183 (2014) 13-17 |
| سنة النشر: | 2013 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | The low-field magnetic response of the non-centrosymmetric superconductor YPtBi ($T_c =0.77$ K) is investigated. Ac-susceptibility and dc-magnetization measurements provide solid evidence for bulk superconductivity with a volume fraction of $\sim 70\%$. The lower critical field is surprisingly small: $B_{c1} = 0.008$ mT $(T \rightarrow 0)$. Muon spin rotation experiments in a transverse magnetic field of 0.01 T show a weak increase of the Gaussian damping rate $\sigma_{TF}$ below $T_c$, which yields a London penetration depth $\lambda = 1.6 \pm 0.2~ \mu$m. The zero-field Kubo-Toyabe relaxation rate $\sigma_{KT}$ equals $0.129 \pm 0.004~\mu$s$^{-1}$ and does not show a significant change below $T_c$. This puts an upper bound of 0.04 mT on the spontaneous magnetic field associated with a possible odd-parity component in the superconducting order parameter. Comment: preprint 10 pages, including 8 figures; accepted for publication in Solid State Communications |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.ssc.2013.12.011 |
| URL الوصول: | http://arxiv.org/abs/1312.3229 |
| رقم الأكسشن: | edsarx.1312.3229 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.ssc.2013.12.011 |
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