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相关论文: Disorder-induced cubic phase in Fe$_2$-based Heusl…

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We study the effect of electrostatic disorder on the conductivity of a three-dimensional antiferromagnetic insulator (a stack of quantum anomalous Hall layers with staggered magnetization). The phase diagram contains regions where the…

介观与纳米尺度物理 · 物理学 2014-01-13 P. Baireuther , J. M. Edge , I. C. Fulga , C. W. J. Beenakker , J. Tworzydło

By combining DFT-based computational analysis and symmetry constraints in terms of group-subgroup relations, we analysed the formation of the native crystalline structure of loellingite FeAs$_2$. We showed that the ground state of the…

材料科学 · 物理学 2016-03-10 A. Pishtshev , P. Rubin

Half-Heusler compounds are known for their various compositions and multifunctional properties including topological phases. In this study, we investigate the topological classification of this class of materials based on the ordering of…

材料科学 · 物理学 2025-01-16 Augusto L. Araújo , Felipe Crasto de Lima , Adalberto Fazzio

Neutron diffraction and 7Li-NMR have been applied to determine the multiferroic system LiCu2O2, which has four chains (ribbon chains) of edge-sharing CuO4 square planes in a unit cell. We have confirmed that there are successive magnetic…

With the use of the band structure calculations we demonstrate that previously reported [Nat. Materials {\bf 3}, 48 (2004)] experimental crystal and magnetic structures for NaMn$_7$O$_{12}$ are inconsistent with each other. The optimization…

强关联电子 · 物理学 2014-06-06 S. V. Streltsov , D. I. Khomskii

We present magnetodielectric measurements in single crystals of the cubic spin-1/2 compound Cu$_2$OSeO$_3$. A magnetic field-induced electric polarization ($\vec{P}$) and a finite magnetocapacitance (MC) is observed at the onset of the…

强关联电子 · 物理学 2012-06-14 M. Belesi , I. Rousochatzakis , M. Abid , U. K. Rößler , H. Berger , J. -Ph. Ansermet

In disordered spin systems with antiferromagnetic Heisenberg exchange, transitions into and out of a magnetic-field-induced ordered phase pass through a unique regime. Using quantum Monte Carlo simulations to study the zero-temperature…

强关联电子 · 物理学 2009-11-11 Omid Nohadani , Stefan Wessel , Stephan Haas

First order ferromagnetic (FM) to antiferromagnetic (AFM) phase transition in doped-CeFe$_2$ alloys is studied with micro-Hall probe technique. Clear visual evidence of magnetic phase-coexistence on micrometer scales and the evolution of…

A novel organometallic compound 2Dioxane.CuCl2.2H2O has been synthesized and structurally characterized by X-ray crystallography. Magnetic susceptibility and zero-field inelastic neutron scattering have also been used to study its magnetic…

强关联电子 · 物理学 2015-05-13 Tao Hong , R. Custelcean , B. C. Sales , B. Roessli , D. K. Singh , A. Zheludev

This study conducts a comprehensive first-principles investigation of the IrMnAl Heusler alloy, highlighting its magnetic properties and assessing the effects of pressure-induced phase shift. The limitations of Generalized Gradient…

材料科学 · 物理学 2024-10-11 Himanshu Joshi , Amel Laref , A. Yvaz , Dibya. P. Rai

The prediction of new high entropy oxides (HEOs) remains a profound challenge due to their inherent chemical complexity. In this work, we combine experimental and computational methods to search for new HEOs in the tetravalent $A$O$_2$…

The Prototypical magnetic memory shape alloy Ni$_2$MnGa undergoes various phase transitions as a function of temperature, pressure, and doping. In the low-temperature phases below 260 K, an incommensurate structural modulation occurs along…

Using the full potential linearized augmented plane wave plus local orbitals method we determine ab-initio the lattice parameters of tetragonally distorted Co2TiSn in the L21 structure. The tetragonal lattice parameter c is determined as a…

材料科学 · 物理学 2010-11-12 Markus Meinert , Jan-Michael Schmalhorst , Günter Reiss

We study the magnetization of a Heisenberg spin ladder using exact diagonalization techniques, finding three distinct magnetic phases. We consider the results in relation to the experimental behaviour of the new copper compound…

凝聚态物理 · 物理学 2009-10-28 C. A. Hayward , D. Poilblanc , L. P. Lévy

Detailed knowledge of the phase diagram and the nature of the competing magnetic and superconducting phases is imperative for an understanding of the physics of iron-based superconductivity. Here, we show using thermodynamic probes that the…

超导电性 · 物理学 2015-08-19 A. E. Böhmer , F. Hardy , L. Wang , T. Wolf , P. Schweiss , C. Meingast

A review of theoretical and experimental studies of the electronic structure, electronic and magnetic properties of various systems of Heusler alloys in the states of a half-metallic ferromagnet, a spin gapless semiconductor, and a…

材料科学 · 物理学 2021-11-30 V. V. Marchenkov , V. Yu. Irkhin

Ordered mechanical systems typically have one or only a few stable rest configurations, and hence are not considered useful for encoding memory. Multistable and history-dependent responses usually emerge from quenched disorder, for example…

软凝聚态物质 · 物理学 2024-05-22 Chaviva Sirote-Katz , Dor Shohat , Carl Merrigan , Yoav Lahini , Cristiano Nisoli , Yair Shokef

The electronic structure and magnetic properties of disordered Fe$_{x}$Pd$_{100-x}$ alloys $(50 < x < 85)$ are investigated in the framework of density functional theory using the full potential local orbital method (FPLO). Disorder is…

材料科学 · 物理学 2009-04-07 Ingo Opahle , Klaus Koepernik , Ulrike Nitzsche , Manuel Richter

Two-dimensional (2D) half-metallic materials are of great interest for their promising applications in spintronics. Although numerous of 2D half-metals have been proposed theoretically, rarely of them can be synthesized experimentally.…

材料科学 · 物理学 2021-07-08 Qiushi Yao , Jiayu Li , Qihang Liu

Optical properties of ferromagnetic half-metallic full-Heusler Co$_{2}$FeGe alloy are investigated experimentally and theoretically. Co$_{2}$FeGe thin films were obtained by DC magnetron sputtering and show the saturation magnetization at…

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