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相关论文: Complex magnetism of lanthanide intermetallics unr…

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When combined with transition metals with partially filled $d$-orbitals, magnetism can be incorporated in two-dimensional materials, which greatly expands the scope for fundamental researches and potential applications of these materials.…

材料科学 · 物理学 2019-12-24 Ming An , Yang Zhang , Jun Chen , Hui-Min Zhang , Yunjun Guo , Shuai Dong

We compute the magnetic susceptibilities of interacting electrons in the presence of disorder on a two-dimensional square lattice by means of quantum Monte Carlo simulations. Clear evidence is found that at sufficiently low temperatures…

强关联电子 · 物理学 2015-05-30 Prabuddha B. Chakraborty , Krzysztof Byczuk , Dieter Vollhardt

Results on electrical resistivity, magnetoresistance, magnetic Results on electrical resistivity, magnetoresistance, magnetic susceptibility, heat capacity and Gd Mossbauer measurements on a Gd-based intermetallic compound,…

强关联电子 · 物理学 2009-10-31 R. Mallik , E. V. Sampathkumaran , M. Strecker , G. Wortmann

The temperature dependence of magnetization and specific heat of the ferromagnetic compound DyFe2Zn20 has been measured in detail in various magnetic fields. We have observed anomalous magnetic behavior, i.e., a strong anisotropy at 2 K,…

We present a theory to model carrier mediated ferromagnetism in concentrated or diluted local moment systems. The electronic subsystem of the Kondo lattice model is described by a combined equation of motion / coherent potential…

强关联电子 · 物理学 2011-04-22 M. Stier , W. Nolting

The thermodynamics of layered antiferro- and ferromagnets with a weak interlayer coupling and/or easy-axis anisotropy is investigated. A crossover from an isotropic 2D-like to 3D Heisenberg (or 2D Ising) regime is discussed within the…

强关联电子 · 物理学 2007-05-23 V. Yu. Irkhin , A. A. Katanin

The interplay between magnetic order, charge dynamics, and crystal field excitations underpins the emergent ground states of rare-earth intermetallics. Using time-domain terahertz spectroscopy, we probe this coupling in PrSi, a metallic…

Employing {\it ab initio} electronic structure calculations we extensively study ternary Heusler compounds having the chemical formula X$_2$X$^\prime$Z, where X = Mn, Fe or Co; Z = Al or Si; and X$^\prime$ changes along the row of 4$d$…

材料科学 · 物理学 2020-01-08 Srikrishna Ghosh , Subhradip Ghosh

We propose that localized defects in magnetic semiconductors act as deep impurities and can be described by the Anderson model. Within this model, hybridization of d-orbitals and p-orbitals gives rise to a non-RKKY indirect exchange…

强关联电子 · 物理学 2007-05-23 Victor Barzykin

Around discontinuous (first-order) magnetic phase transitions the strong caloric response of materials to the application of small fields is widely studied for the development of solid-state refrigeration. Typically strong magnetostructural…

材料科学 · 物理学 2020-05-27 Eduardo Mendive-Tapia , Durga Paudyal , Leon Petit , Julie B. Staunton

Based on density functional theory and symmetry analysis, we present a comprehensive investigation of electronic structure, magnetic properties and possible structural distortion of magnetic kagome metal FeGe. We estimate the magnetic…

强关联电子 · 物理学 2023-08-02 Hanjing Zhou , Songsong Yan , Dongze Fan , Di Wang , Xiangang Wan

Seminal Goodenough-Kanamori-Anderson (GKA) rules provide the inceptive understanding of the superexchange interaction of two magnetic metal ions bridged with an anion, and suggest fostered ferromagnetic interaction for orthogonal bridging…

介观与纳米尺度物理 · 物理学 2023-09-28 U. Yorulmaz , D. Šabani , C. Sevik , M. V. Milošević

We have investigated the electronic structure and magnetic properties of GdN as a function of unit cell volume. Based on the first-principles calculations of GdN, we observe that there is a transformation in conduction properties associated…

计算物理 · 物理学 2009-11-11 C. -G. Duan , R. F. Sabiryanov , J. Liu , W. N. Mei , P. A. Dowben , J. R. Hardy

The electronic structure and magnetic coupling properties of rare-earth metals (Gd, Nd) doped ZnO have been investigated using first-principles methods. We show that the magnetic coupling between Gd or Nd ions in the nearest neighbor sites…

材料科学 · 物理学 2010-05-10 Hongliang Shi , Ping Zhang , Shu-Shen Li , Jian-Bai Xia

A comprehensive experimental and theoretical study of the low temperature properties of GdCoIn$_5$ was performed. Specific heat, thermal expansion, magnetization and electrical resistivity were measured in good quality single crystals down…

We use the local density approximation (LDA) and LDA+U schemes to study the magnetism of (GaMn)As and (GaMn)N for a number of Mn concentrations and varying number of holes. We show that for both systems and both calculational schemes the…

材料科学 · 物理学 2009-11-10 L. M. Sandratskii , P. Bruno , J. Kudrnovský

Dc and ac-magnetic susceptibility ($\chi$), specific heat ($C_\mathrm{P}$), electrical resistivity ($\rho$) and magnetoresistance measurements performed on the new polycrystalline compound $\mathrm{Gd_2AgSi_3}$, crystallizing in the…

材料科学 · 物理学 2021-05-05 Baidyanath Sahu

MnSn monolayer synthesized recently is a novel two-dimensional ferromagnetic material with a hexagonal lattice, in which three Mn atom come together to form a trimer, making it remarkably different from other magnetic two-dimensional…

材料科学 · 物理学 2024-06-19 Panjun Feng , Xiaohui Zhang , Dapeng Liu , Shuo Zhang , Xun-Wang Yan , Z. Y. Xie

We here study electronic structure and magnetic properties of bcc Co$_{x}$Fe$_{1-x}$, Cr$_{x}$Fe$_{1-x}$ and Mn$_{x}$Fe$_{1-x}$ in their ferromagnetic phases using Augmented Space Recursion technique coupled with tight-binding linearized…

材料科学 · 物理学 2019-08-17 Subhradip Ghosh , Chhanda Basu Chaudhuri , Biplab Sanyal , Abhijit Mookerjee

First principles electronic structure calculations have been carried out on ordered double perovskites Sr_2B'B"O_6 (for B' = Cr or Fe and B" 4d and 5d transition metal elements) with increasing number of valence electrons at the B-sites,…

材料科学 · 物理学 2009-11-13 T. K. Mandal , C. Felser , M. Greenblatt , J. Kubler