تقرير
Magnetic mixed valent semimetal EuZnSb$_2$ with Dirac states in the band structure
| العنوان: | Magnetic mixed valent semimetal EuZnSb$_2$ with Dirac states in the band structure |
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| المؤلفون: | Wang, Aifeng, Baranets, Sviatoslav, Liu, Yu, Tong, Xiao, Stavitski, E., Zhang, Jing, Chai, Yisheng, Yin, Wei-Guo, Bobev, Svilen, Petrovic, C. |
| المصدر: | Physical Review Research 2, 033462 (2020) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We report discovery of new antiferromagnetic semimetal EuZnSb$_2$, obtained and studied in the form of single crystals. Electric resistivity, magnetic susceptibility and heat capacity indicate antiferromagnetic order of Eu with $T_N$ = 20 K. The effective moment of Eu$^{2+}$ inferred from the magnetization and specific heat measurement is 3.5 $\mu_B$, smaller than the theoretical value of Eu$^{2+}$ due to presence of both Eu$^{3+}$ and Eu$^{2+}$. Magnetic field-dependent resistivity measurements suggest dominant quasi two dimensional Fermi surfaces whereas the first-principle calculations point to the presence of Dirac fermions. Therefore, EuZnSb$_2$ could represent the first platform to study the interplay of dynamical charge fluctuations, localized magnetic 4$f$ moments and Dirac states with Sb orbital character. Comment: 9 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevResearch.2.033462 |
| URL الوصول: | http://arxiv.org/abs/2009.10720 |
| رقم الأكسشن: | edsarx.2009.10720 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevResearch.2.033462 |
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