Manipulating magnetism in the topological semimetal EuCd2As2

Date
2020-04-01
Authors
Jo, Na Hyun
Kuthanazhi, Brinda
Wu, Yun
Canfield, Paul
Timmons, Erik
Kim, Tae-Hoon
Zhou, Lin
Wang, Lin-Lin
Ueland, Benjamin
Palasyuk, Andriy
Ryan, Dominic
McQueeney, Robert
Lee, Kyungchan
Schrunk, Benjamin
Burkov, Anton
Prozorov, Ruslan
Bud’ko, Sergey
Kaminski, Adam
Canfield, Paul
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Ames Laboratory
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Physics and Astronomy
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Ames LaboratoryPhysics and Astronomy
Abstract

EuCd2As2 is a magnetic semimetal that has the potential of manifesting nontrivial electronic states, depending on its low temperature magnetic ordering. Here, we report the successful synthesis of single crystals of EuCd2As2 that order ferromagnetically or antiferromagnetically depending on the level of band filling, thus allowing for the use of magnetism to tune the topological properties within the same host. We explored their physical properties via magnetization, electrical transport, heat capacity, and angle-resolved photoemission spectroscopy measurements and conclude that EuCd2As2 is an excellent, tunable system for exploring the interplay of magnetic ordering and topology.

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This article is published as Jo, Na Hyun, Brinda Kuthanazhi, Yun Wu, Erik Timmons, Tae-Hoon Kim, Lin Zhou, Lin-Lin Wang, Benjamin G. Ueland, Andriy Palasyuk, Dominic H. Ryan, Robert J. McQueeney, Kyungchan Lee, Benjamin Schrunk, Anton A. Burkov, Ruslan Prozorov, Sergey L. Bud'ko, Adam Kaminski, and Paul C. Canfield. "Manipulating magnetism in the topological semimetal EuCd 2 As 2." Physical Review B 101, no. 14 (2020): 140402(R). DOI: 10.1103/PhysRevB.101.140402. Posted with permission.

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