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Related papers: Tetragonal CuMnAs alloy: role of defects

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CuMnAs with perpendicular magnetic anisotropy is proposed as an active material for antiferromagnetic memory. Information can be stored in the antiferromagnetic domain state, while writing and readout can rely on the existence of the…

Materials Science · Physics 2018-10-26 I. A. Zhuravlev , A. Adhikari , K. D. Belashchenko

The antiferromagnetic (AFM) semimetal YbMnSb$_2$ has recently been identified as a candidate topological material, driven by time-reversal symmetry breaking. Depending on the ordered arrangement of Mn spins below the N\'{e}el temperature,…

The non-collinear antiferromagnetic (AFM) structure makes Mn3Sn exhibit exotic properties. At present, it has been found that both the hydrostatic pressure and the strain introduced by interstitial N atoms have a great influence on this…

Materials Science · Physics 2021-01-14 J. J. Deng , J. Li , Y. Wang , X. Wu , X. T. Niu , L. Ma , D. W. Zhao , C. M. Zhen , D. L. Hou , E. K. Liu , W. H. Wang , G. H. Wu

Antiferromagnets are magnetically ordered materials which exhibit no net moment and thus are insensitive to magnetic fields. Antiferromagnetic spintronics aims to take advantage of this insensitivity for enhanced stability, while at the…

The use of antiferromagnets in magnetoelectronic devices as counterparts of ferromagnets is a new, rapidly developing trend in spintronics that leverages antiferromagnetic (AFM) magnons for transmitting of spin currents. Van der Waals (vdW)…

Antiferromagnetic materials have a vanishingly small net magnetization, which generates weak dipolar fields and makes them robust against external magnetic perturbation and rapid magnetization dynamics, as dictated by the geometric mean of…

Materials Science · Physics 2024-11-19 Ankit Shukla , Siyuan Qian , Shaloo Rakheja

Spintronic devices using antiferromagnets (AFMs) are promising candidates for future applications. Recently, many interesting physical properties have been reported with AFM-based devices. Here we report a butterfly-shaped magnetoresistance…

The trigonal compound EuSn2As2 was recently discovered to host Dirac surface states within the bulk band gap and orders antiferromagnetically below the Neel temperature TN = 24 K. Here the magnetic ground state of single-crystal EuSn2As2…

Strongly Correlated Electrons · Physics 2022-04-05 Santanu Pakhira , M. A. Tanatar , Thomas Heitmann , David Vaknin , D. C. Johnston

High Curie temperature of 900 K has been reported in Cr-doped AlN diluted magnetic semiconductors prepared by various methods, which is exciting for spintronic applications. It is believed that N defects play important roles in achieving…

Materials Science · Physics 2008-11-15 Li-Jie Shi , Li-Fang Zhu , Yong-Hong Zhao , Bang-Gui Liu

The random substitutional solid solution between the antiferromagnetic (AFM) full-Heusler alloy Ru$_2$MnSn and the ferromagnetic (FM) full-Heusler alloy Ru$_2$FeSn provides a rare opportunity to study FM-AFM phase competition in a…

Aluminum and their alloys, after careful treatments, can develop excellent mechanical, tribological, electrical and chemical (high corrosion resistance) properties. However, 7000 series, with Cu in the alloy, have a poor corrosion…

Determination of the magnetic structure and confirmation of the presence or absence of inversion ($\mathcal{P}$) and time reversal ($\mathcal{T}$) symmetry is imperative for correctly understanding the topological magnetic materials. Here…

Strongly Correlated Electrons · Physics 2024-04-30 Bo Li , Xu-Tao Zeng , Qianhui Xu , Fan Yang , Junsen Xiang , Hengyang Zhong , Sihao Deng , Lunhua He , Juping Xu , Wen Yin , Xingye Lu , Huiying Liu , Xian-Lei Sheng , Wentao Jin

Compositionally complex materials (CCMs) present a potential paradigm shift in the design of magnetic materials. These alloys exhibit long-range structural order coupled with limited or no chemical order. As a result, extreme local…

We report magnetic susceptibility \chi, isothermal magnetization M, heat capacity C_p and electrical resistivity \rho measurements on undoped EuMn2As2 and K-doped Eu0.96K0.04Mn2As2 and Eu0.93K0.07Mn2As2 single crystals with the trigonal…

Strongly Correlated Electrons · Physics 2016-12-13 V. K. Anand , D. C. Johnston

We report the physical properties of orthorhombic o-CuMnAs single crystal, which is predicted to be a topological Dirac semimetal with magnetic ground state and inversion symmetry broken. o-CuMnAs exhibits an antiferromagnetic transition…

Materials Science · Physics 2017-12-13 Xiao Zhang , Shanshan Sun , Hechang Lei

Altermagnetism (AM) and its associated spin-transport phenomena are typically linked to spin-split electronic band structures in bulk materials. However, the crystal surface has a reduced symmetry with respect to the bulk, which can induce…

Strongly Correlated Electrons · Physics 2026-02-12 Valentin Leeb , Peru d'Ornellas , Fernando de Juan , Adolfo G. Grushin

An archetypical spin-glass metallic alloy, Cu0.83Mn0.17, is studied by means of an ab-initio based approach. First-principles calculations are employed to obtain effective chemical, strain-induced and magnetic exchange interactions, as well…

Materials Science · Physics 2009-06-16 O. E. Peil , A. V. Ruban , B. Johansson

The inference of Ying et al. [EPL 104, 67005 (2013)] of a composition-induced change from c-axis ordered-moment alignment in a collinear A-type antiferromagnetic (AFM) structure (AFMI) at small x to ab-plane alignment in an unknown AFM…

Strongly Correlated Electrons · Physics 2017-12-22 N. S. Sangeetha , V. Smetana , A. -V. Mudring , D. C. Johnston

Severe plastic deformation using high-pressure torsion of ternary Cu-based materials (CuFeCo and CuFeNi) was used to fabricate bulk samples with a nanocrystalline microstructure. The goal was to produce materials featuring the granular…

Materials Science · Physics 2022-08-26 M. Kasalo , S. Wurster , M. Stückler , M. Zawodzki , L. Weissitsch , R. Pippan , A. Bachmaier

The $A$MnO$_{2}$ delafossites ($A$=Na, Cu), are model frustrated antiferromagnets, with triangular layers of Mn$^{3+}$~spins. At low temperatures ($T_{N}$=65 K), a $C2/m \rightarrow P\overline{1}$ transition is found in CuMnO$_2$, which…