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相关论文: Magnetic exchange interactions in monolayer CrI$_3…

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We investigate the effect of coupling (intensity and nature), applied field, and anisotropy on the spin dynamics of a multi-layer system composed of a hard magnetic slab coupled to a soft magnetic slab through a nonmagnetic spacer. The soft…

材料科学 · 物理学 2015-06-12 Andres Felipe Franco , Hamid Kachkachi

The exploration of magnetism in two-dimensional layered materials has attracted extensive research interest. For the monoclinic phase CrI3 with interlayer antiferromagnetism, finding a static and robust way of realizing the intrinsic…

材料科学 · 物理学 2022-11-30 Shiyang Sun , Xuyan Chen , Xuqi Li , Huihui Zhang , Haidan Sang , Shifei Qi , Zhenhua Qiao

We report measurements and analysis of the magnetic critical phenomena in a single crystal of La${_{0.875}}$Sr${_{0.125}}$MnO${_3}$. The critical exponents associated with the ferromagnetic transition have been determined from ac…

强关联电子 · 物理学 2007-05-23 Sunil Nair , A. Banerjee , A. V. Narlikar , D. Prabhakaran , A. T. Boothroyd

In this letter, we report the visualization of topologically protected spin textures, in the form of magnetic skyrmions, in recently discovered monoatomic-thin two-dimensional CrI$_3$. By combining density functional theory and atomistic…

材料科学 · 物理学 2019-07-24 Aroop K. Behera , Sugata Chowdhury , Suprem R. Das

Magnetic properties of fcc structured ferromagnetic films with the number of spin layers up to seventy was described using third order perturbed Heisenberg Hamiltonian. The variation of magnetic easy direction, magnetic energies in easy and…

材料科学 · 物理学 2017-12-08 P. Samarasekara , N. U. S. Yapa , C. A. N. Fernando

Layered {\alpha}-RuCl3 is a promising material to potentially realize the long-sought Kitaev quantum spin liquid with fractionalized excitations. While evidence of this exotic state has been reported under a modest in-plane magnetic field,…

Inelastic neutron scattering measurements were performed on the ferromagnetic chain system CsNiF_3 in the collinear antiferromagnetic ordered state below T_N = 2.67K. The measured spin wave dispersion was found to be in good agreement with…

凝聚态物理 · 物理学 2009-10-28 M. Baehr , M. Winkelmann , P. Vorderwisch , M. Steiner , C. Pich , F. Schwabl

We calculate Heisenberg-type magnetic exchange interactions for SrMnO$_3$ under isotropic volume expansion using an approach that is based on total energy variations due to infinitesimal spin rotations around a given reference state. Our…

材料科学 · 物理学 2020-02-12 Xiangzhou Zhu , Alexander Edström , Claude Ederer

The FMR linewidth and its anisotropy in F$_1$/f/F$_2$/AF multilayers, where spacer f has a low Curie point compared to the strongly ferromagnetic F$_1$ and F$_2$, is investigated. The role of the interlayer exchange coupling in…

介观与纳米尺度物理 · 物理学 2016-08-31 A. F. Kravets , D. M. Polishchuk , Yu. I. Dzhezherya , A. I. Tovstolytkin , V. O. Golub , V. Korenivski

The recent discovery of ferromagnetic single-layer CrI3 creates ample opportunities for studying fundamental properties of atomically-thin magnets. By using first-principles calculations and model analysis, we show that a lateral strain…

介观与纳米尺度物理 · 物理学 2017-09-19 Fawei Zheng , Jize Zhao , Zheng Liu , Menglei Li , Mei Zhou , Shengbai Zhang , Ping Zhang

We investigate the structural, magnetocrystalline anisotropy, critical behaviour, and magnetocaloric effect in the layered room-temperature monoclinic ferromagnet Cr$_{1.38}$Te$_2$. The critical behavior is studied by employing various…

Intrinsic, two-dimensional ferromagnetic semiconductors are an important class of materials for overcoming the limitations of dilute magnetic semiconductors for spintronics applications. CrSiTe$_3$ is a particularly interesting member of…

强关联电子 · 物理学 2015-10-06 T. J. Williams , A. A. Aczel , M. D. Lumsden , S. E. Nagler , M. B. Stone , J. -Q. Yan , D. Mandrus

We have studied a nearly stoichiometric insulating Y$_{0.97(2)}$Cr$_{0.98(2)}$O$_{3.00(2)}$ single crystal by performing measurements of magnetization, heat capacity, and neutron diffraction. Albeit that the YCrO$_3$ compound behaviors like…

We calculate the static and dynamic properties of single crystal, single molecule magnets consisting of equal spin $S=1/2$ or 5/2 dimers. The spins in each dimer interact with each other via the Heisenberg exchange interaction and with the…

统计力学 · 物理学 2009-11-07 Dmitri V. Efremov , Richard A. Klemm

The pertinent need for microscopic understanding of magnetic exchange motivated us to go beyond the existing theories and develop a systematic method to quantify all possible mechanisms that contribute to magnetic exchange for an arbitrary…

材料科学 · 物理学 2025-02-13 Denis Šabani , Cihan Bacaksız , Milorad V. Milošević

We compare transverse and parallel static susceptibilities of in-plane uniaxial anisotropic ferromagnetic Heisenberg films calculated in the framework of many-body Green's function theory using single-ion anisotropies with the previously…

统计力学 · 物理学 2009-11-10 P. Fröbrich , P. J. Kuntz

we investigate the thermodynamic properties of weakly anisotropic disordered magnetic chains where the nearest-neighbor Heisenberg exchange coupling is the dominant spin-spin interaction. In addition to the exchange interaction, there is…

无序系统与神经网络 · 物理学 2009-11-07 I. Avgin , D. L. Huber

First principles density functional theory based calculations have been carried out to predict the effects of Mn replacement by Fe and Cr on electronic as well as magnetic properties of Pt$_{2}$MnGa as well as Ni$_{2}$MnGa. All the…

材料科学 · 物理学 2017-08-02 Tufan Roy , Aparna Chakrabarti

Proposals for novel spin-orbitronic logic1 and memory devices2 are often predicated on assumptions as to how materials with large spin-orbit coupling interact with ferromagnets when in contact. Such interactions give rise to a host of novel…

介观与纳米尺度物理 · 物理学 2015-08-05 Hans T. Nembach , Justin M. Shaw , Mathias Weiler , Emilie Jué , Thomas J. Silva

We present a detailed theoretical investigation on the magnetic properties of small single-layered Fe, Co and Ni clusters deposited on Ir(111), Pt(111) and Au(111). For this a fully relativistic {\em ab-initio} scheme based on density…

材料科学 · 物理学 2015-06-04 S. Bornemann , O. Šipr , S. Mankovsky , S. Polesya , J. B. Staunton , W. Wurth , H. Ebert , J. Minár