A magnetic topological semimetal Sr1-y Mn1-zSb2 (y, z < 0.1)

Authors

J. Y. Liu, Tulane University
J. Hu, Tulane University
Q. Zhang, Louisiana State University
D. Graf, National High Magnetic Field Laboratory
H. B. Cao, Oak Ridge National Laboratory
S. M.A. Radmanesh, University of New Orleans
D. J. Adams, University of New Orleans
Y. L. Zhu, Tulane University
G. F. Cheng, Tulane University
X. Liu, Tulane University
W. A. Phelan, Louisiana State University
J. Wei, Tulane University
M. Jaime, Los Alamos National Laboratory
F. Balakirev, Los Alamos National Laboratory
D. A. Tennant, Oak Ridge National Laboratory
J. F. DItusa, Louisiana State University
I. Chiorescu, National High Magnetic Field Laboratory
L. Spinu, University of New Orleans
Z. Q. Mao, Tulane University

Document Type

Article

Publication Date

9-1-2017

Abstract

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-y Mn1-z Sb2 (y, z < 0.1) with nearly massless relativistic fermion behaviour (m-=0.04-0.05m0, where m 0 is the free-electron mass). This material exhibits a ferromagnetic order for 304 K

Publication Source (Journal or Book title)

Nature Materials

First Page

905

Last Page

910

Recommended Citation

Liu, J., Hu, J., Zhang, Q., Graf, D., Cao, H., Radmanesh, S., Adams, D., Zhu, Y., Cheng, G., Liu, X., Phelan, W., Wei, J., Jaime, M., Balakirev, F., Tennant, D., DItusa, J., Chiorescu, I., Spinu, L., & Mao, Z. (2017). A magnetic topological semimetal Sr1-y Mn1-zSb2 (y, z < 0.1). Nature Materials, 16 (9), 905-910. https://doi.org/10.1038/nmat4953