Toward tunable quantum transport and novel magnetic states in Eu1−xSrxMn1−zSb2 (z < 0.05)

Qiang Zhang; Jinyu Liu; Huibo Cao; Adam Phelan; David Graf; J. F. DiTusa; D. Alan Tennant; Zhiqiang Mao

doi:10.1038/s41427-022-00369-5

Toward tunable quantum transport and novel magnetic states in Eu_1−xSr_xMn_1−zSb₂ (z < 0.05)

Qiang Zhang, Jinyu Liu, Huibo Cao, Adam Phelan, David Graf, J. F. DiTusa, D. Alan Tennant, Zhiqiang Mao

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Magnetic semimetals are very promising for potential applications in novel spintronic devices. Nevertheless, realizing tunable topological states with magnetism in a controllable way is challenging. Here, we report novel magnetic states and the tunability of topological semimetallic states through the control of Eu spin reorientation in Eu_1−xSr_xMn_1−zSb₂. Increasing the Sr concentration in this system induces a surprising reorientation of noncollinear Eu spins to the Mn moment direction and topological semimetallic behavior. The Eu spin reorientations to distinct collinear antiferromagnetic orders are also driven by the temperature/magnetic field and are coupled to the transport properties of the relativistic fermions generated by the 2D Sb layers. These results suggest that nonmagnetic element doping at the rare earth element site may be an effective strategy for generating topological electronic states and new magnetic states in layered compounds involving spatially separated rare earth and transition metal layers.

Original language	English
Article number	22
Journal	NPG Asia Materials
Volume	14
Issue number	1
DOIs	https://doi.org/10.1038/s41427-022-00369-5
State	Published - Dec 2022

Funding

Q.Z. J.L, A.P., and J.F.D. acknowledge the support for the materials preparation, measurements of the magnetization, transport and magnetotransport properties, and neutron scatting experiments from the US DOE under EPSCoR Grant No. DESC0012432 with additional support from the Louisiana board of regents. The use of the High Flux Isotope Reactor at Oak Ridge National Laboratory was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Scientific User Facilities Division. D.A.T. is sponsored by the DOE Office of Science, Laboratory Directed Research and Development Program (LDRD) of Oak Ridge National Laboratory, managed by UT-Battelle, LLC for the U.S. Department of Energy (Project ID 9566). A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreement No. DMR-1644779 and the State of Florida.

Funders	Funder number
State of Florida
National Science Foundation	DMR-1644779
U.S. Department of Energy
Office of Experimental Program to Stimulate Competitive Research	DESC0012432
Office of Science
Basic Energy Sciences
Oak Ridge National Laboratory
UT-Battelle	ID 9566

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abstract = "Magnetic semimetals are very promising for potential applications in novel spintronic devices. Nevertheless, realizing tunable topological states with magnetism in a controllable way is challenging. Here, we report novel magnetic states and the tunability of topological semimetallic states through the control of Eu spin reorientation in Eu1−xSrxMn1−zSb2. Increasing the Sr concentration in this system induces a surprising reorientation of noncollinear Eu spins to the Mn moment direction and topological semimetallic behavior. The Eu spin reorientations to distinct collinear antiferromagnetic orders are also driven by the temperature/magnetic field and are coupled to the transport properties of the relativistic fermions generated by the 2D Sb layers. These results suggest that nonmagnetic element doping at the rare earth element site may be an effective strategy for generating topological electronic states and new magnetic states in layered compounds involving spatially separated rare earth and transition metal layers.",

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AU - Cao, Huibo

AU - Phelan, Adam

AU - Graf, David

AU - DiTusa, J. F.

AU - Tennant, D. Alan

AU - Mao, Zhiqiang

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AB - Magnetic semimetals are very promising for potential applications in novel spintronic devices. Nevertheless, realizing tunable topological states with magnetism in a controllable way is challenging. Here, we report novel magnetic states and the tunability of topological semimetallic states through the control of Eu spin reorientation in Eu1−xSrxMn1−zSb2. Increasing the Sr concentration in this system induces a surprising reorientation of noncollinear Eu spins to the Mn moment direction and topological semimetallic behavior. The Eu spin reorientations to distinct collinear antiferromagnetic orders are also driven by the temperature/magnetic field and are coupled to the transport properties of the relativistic fermions generated by the 2D Sb layers. These results suggest that nonmagnetic element doping at the rare earth element site may be an effective strategy for generating topological electronic states and new magnetic states in layered compounds involving spatially separated rare earth and transition metal layers.

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Toward tunable quantum transport and novel magnetic states in Eu_1−xSr_xMn_1−zSb₂ (z < 0.05)

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