تقرير
Zero-Field Quantum Critical Point in Ce$_{0.91}$Yb$_{0.09}$CoIn$_5$
| العنوان: | Zero-Field Quantum Critical Point in Ce$_{0.91}$Yb$_{0.09}$CoIn$_5$ |
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| المؤلفون: | Singh, Y. P., Adhikari, R. B., Haney, D. J., White, B. D., Maple, M. B., Dzero, M., Almasan, Carmen C. |
| المصدر: | Phys. Rev. B 97, 184514 (2018) |
| سنة النشر: | 2017 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We present results of specific heat, electrical resistance, and magnetoresistivity measurements on single crystals of the heavy-fermion superconducting alloy Ce$_{0.91}$Yb$_{0.09}$CoIn$_5$. Non-Fermi liquid to Fermi liquid crossovers are clearly observed in the temperature dependence of the Sommerfeld coefficient $\gamma$ and resistivity data. Furthermore, we show that the Yb-doped sample with $x=0.09$ exhibits universality due to an underlying quantum phase transition without an applied magnetic field by utilizing the scaling analysis of $\gamma$. Fitting of the heat capacity and resistivity data based on existing theoretical models indicates that the zero-field quantum critical point is of antiferromagnetic origin. Finally, we found that at zero magnetic field the system undergoes a third-order phase transition at the temperature $T_{c3}\approx 7$ K. Comment: 5 pages + 3 figures (main text) & 5 pages + 4 figures (supplementary materials) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.97.184514 |
| URL الوصول: | http://arxiv.org/abs/1709.07161 |
| رقم الأكسشن: | edsarx.1709.07161 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.97.184514 |
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