تقرير
A magnetic topological semimetal Sr1-yMn1-zSb2 (y, z< 0.1)
| العنوان: | A magnetic topological semimetal Sr1-yMn1-zSb2 (y, z< 0.1) |
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| المؤلفون: | Liu, J. Y., Hu, J., Zhang, Q., Graf, D., Cao, H. B., Radmanesh, S. M. A., Adams, D. J., Zhu, Y. L., Cheng, G. F., Liu, X., Phelan, W. A., Wei, J., Tennant, D. A., DiTusa, J. F., Chiorescu, I., Spinu, L., Mao, Z. Q. |
| المصدر: | Nature Materials 16, 905-910 (2017) |
| سنة النشر: | 2015 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Weyl (WSMs) evolve from Dirac semimetals in the presence of broken time-reversal symmetry (TRS) or space-inversion symmetry. The WSM phases in TaAs-class materials and photonic crystals are due to the loss of space-inversion symmetry. For TRS-breaking WSMs, despite numerous theoretical and experimental efforts, few examples have been reported. In this Article, we report a new type of magnetic semimetal Sr1-yMn1-zSb2 (y,z<0.1) with nearly massless relativistic fermion behaviour (m*=0.04-0.05m0, where m0 is the free electron mass). This material exhibits a ferromagnetic order for 304K < T < 565K, but a canted antiferromagnetic order with a ferromagnetic component for T < 304K. The combination of relativistic fermion behaviour and ferromagnetism in Sr1-yMn1-zSb2 offers a rare opportunity to investigate the interplay between relativistic fermions and spontaneous TRS breaking. Comment: Accepted by Nature Materials |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/nmat4953 |
| URL الوصول: | http://arxiv.org/abs/1507.07978 |
| رقم الأكسشن: | edsarx.1507.07978 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/nmat4953 |
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