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02567nam a2200457Ia 4500 |
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0.1002-qute.202200012 |
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220421s2022 CNT 000 0 und d |
| 020 |
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|a 25119044 (ISSN)
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|a Unusual Electrical and Magnetic Properties in Layered EuZn2As2
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|b John Wiley and Sons Inc
|c 2022
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| 856 |
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|z View Fulltext in Publisher
|u https://doi.org/10.1002/qute.202200012
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|a Eu-based compounds often exhibit unusual magnetism, which is critical for nontrivial topological properties seen in materials such as EuCd2As2. The authors investigate the structure and physical properties of EuZn2As2 through measurements of the electrical resistivity, Hall effect, magnetization, and neutron diffraction. Their data show that EuZn2As2 orders antiferromagnetically with an A-type spin configuration below TN = 19 K. Surprisingly, there is strong evidence for dominant ferromagnetic fluctuations above TN, as reflected by positive Curie–Weiss temperature and extremely large negative magnetoresistance (MR) between TN and Tfl ≈200 K. Furthermore, the angle dependence of the MRab indicates field-induced spin reorientation from the ab-plane to a direction ≈45° from the ab plane. Compared to EuCd2As2, the doubled TN and Tfl make EuZn2As2 a better platform for exploring nontrivial magnetic and electronic properties in both magnetic fluctuation (TN < T < Tfl) and ordered (T < TN) regimes. © 2022 The Authors. Advanced Quantum Technologies published by Wiley-VCH GmbH.
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|a Antiferromagnetic orderings
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|a antiferromagnetic orders
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|a Electrical and magnetic property
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|a Electronic properties
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|a Europium compounds
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|a Ferromagnetic fluctuation
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|a ferromagnetic fluctuations
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|a Ferromagnetic materials
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|a Ferromagnetism
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|a Magnetic space group
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|a Measurements of
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|a Spin configurations
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|a Spin fluctuations
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|a Structure and physical properties
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|a Topological properties
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|a Topological state
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|a topological states
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|a Topology
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|a type-IV magnetic space group
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|a Type-IV magnetic space group
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|a Zinc compounds
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|a Blawat, J.
|e author
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|a Cao, H.
|e author
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|a Feng, E.
|e author
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|a Jin, R.
|e author
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|a Marshall, M.
|e author
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|a Singleton, J.
|e author
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|a Xie, W.
|e author
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| 773 |
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|t Advanced Quantum Technologies
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