Defect induced ferromagnetic ordering and room temperature negative magnetoresistance in MoTeP

Debarati Pal; Shiv Kumar; Prashant Shahi; Sambhab Dan; Abhineet Verma; Vinod K Gangwar; Mahima Singh; Sujoy Chakravarty; Yoshiya Uwatoko; Satyen Saha; Swapnil Patil; Sandip Chatterjee

doi:10.1038/s41598-021-88669-8

Defect induced ferromagnetic ordering and room temperature negative magnetoresistance in MoTeP

Sci Rep. 2021 Apr 27;11(1):9104. doi: 10.1038/s41598-021-88669-8.

Authors

Affiliations

¹ Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India.
² Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima City, 739-0046, Japan.
³ Department of Physics, D.D.U. Gorakhpur University, Gorakhpur, 273009, India.
⁴ Department of Chemistry, Institute of Science (Banaras Hindu University), Varanasi, 221005, India.
⁵ UGC-DAE Consortium for Scientific Research, Kalpakkam Node, Kokilamedu, 603104, India.
⁶ Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan.
⁷ Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India. spatil.phy@itbhu.ac.in.
⁸ Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India. schatterji.app@iitbhu.ac.in.

Abstract

The magneto-transport, magnetization and theoretical electronic-structure have been investigated on type-II Weyl semimetallic MoTeP. The ferromagnetic ordering is observed in the studied sample and it has been shown that the observed magnetic ordering is due to the defect states. It has also been demonstrated that the presence of ferromagnetic ordering in effect suppresses the magnetoresistance (MR) significantly. Interestingly, a change-over from positive to negative MR is observed at higher temperature which has been attributed to the dominance of spin scattering suppression.