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The ternary-arsenide compound BaCo2As2 was previously proposed to be in proximity to a quantum-critical point where long-range ferromagnetic (FM) order is suppressed by quantum fluctuations. Here we report the effect of Ir substitution for…

Strongly Correlated Electrons · Physics 2020-07-02 Santanu Pakhira , N. S. Sangeetha , V. Smetana , A. -V. Mudring , D. C. Johnston

Magnetic moments intercalated into layered transition metal dichalcogenides are an excellent system for investigating the rich physics associated with magnetic ordering in a strongly anisotropic, strong spin-orbit coupling environment. We…

Strongly Correlated Electrons · Physics 2015-04-08 Will J. Hardy , Chih-Wei Chen , A. Marcinkova , Heng Ji , Jairo Sinova , D. Natelson , E. Morosan

The Dzyaloshinskii-Moriya (DM) interaction is present in the transition metal dichalcogenides (TMDC) magnets of form $M_{1/3}T$S$_{2}$ ($M$ $=$ 3d transition metal, $T$ $\in$ {Nb, Ta}), given that the intercalants $M$ form…

In this work we conduct a numerical search of non-trivial mechanisms, leading to new tendencies towards long-range ferromagnetic ordering in two-dimensional materials. For this purpose we employ an original variant of pairwise infinitesimal…

Materials Science · Physics 2022-01-03 I. V. Kashin , A. Gerasimov , E. V. Syrnikov

The iron arsenide Sr2CrO3FeAs with the tetragonal Sr2GaO3CuS-type structure was synthesized and its crystal structure re-determined by neutron powder diffraction. In contrast to previous X-ray crystallographic studies, a mixed occupancy of…

Superconductivity · Physics 2010-02-24 Marcus Tegel , Franziska Hummel , Yixi Su , Tapan Chatterji , Michela Brunelli , Dirk Johrendt

We have synthesized and studied a new iridate, Ba13Ir6O30, with unusual Ir oxidation states: 2/3 Ir6+(5d3) ions and 1/3 Ir5+(5d4) ions. Its crystal structure features dimers of face-sharing IrO6 octahedra, and IrO6 monomers, that are linked…

Strongly Correlated Electrons · Physics 2019-08-28 Hengdi Zhao , Feng Ye , Hao Zheng , Bing Hu , Yifei Ni , Yu Zhang , Itamar Kimchi , Gang Cao

The chromium arsenides BaCr2As2 and BaCrFeAs2 with ThCr2Si2 type structure (space group I4/mmm; also adopted by '122' iron arsenide superconductors) have been suggested as mother compounds for possible new superconductors. DFT-based…

Weyl (WSMs) evolve from Dirac semimetals in the presence of broken time-reversal symmetry (TRS) or space-inversion symmetry. The WSM phases in TaAs-class materials and photonic crystals are due to the loss of space-inversion symmetry. For…

We present a survey of the structural and magnetic properties of submonolayer transition metal dioxides on the (001) surfaces of the heavy face-centered cubic (fcc) noble metals Ir and Pt performed by spin-averaged scanning tunneling…

Materials Science · Physics 2019-10-08 M. Schmitt , C. H. Park , P. Weber , A. Jäger , J. Kemmer , M. Vogt , M. Bode

Quasi-one-dimensional quantum antiferromagnets formed by a d-dimensional hypercubic lattice of weakly coupled spin-1/2 antiferromagnetic Heisenberg chains are studied by combining exact results in one-dimension and renormalization group…

Strongly Correlated Electrons · Physics 2009-10-28 Ziqiang Wang

Exploring new magnetic materials is essential for finding advantageous functional properties such as magnetoresistance, magnetocaloric effect, spintronic functionality, and multiferroicity. Versatile classes of double perovskite compounds…

Strongly Correlated Electrons · Physics 2019-05-03 M. K. Kim , J. Y. Moon , S. H. Oh , D. G. Oh , Y. J. Choi , N. Lee

Different types of order are discussed in the context of strongly correlated transition metal oxides, involving pure compounds and $3d^{3}-4d^{4}$ and $3d^{2}-4d^{4}$ hybrids. Apart from standard, long-range spin and orbital orders we…

Strongly Correlated Electrons · Physics 2019-10-24 Wojciech Brzezicki

Magnetic monopoles and toroidal order are compelling features that have long been theorized but remain elusive in real materials. Multiferroic hexagonal ferrites are an interesting realization of frustrated triangular lattice, where…

Strongly Correlated Electrons · Physics 2020-01-08 Francesco Foggetti , Sang-Wook Cheong , Sergey Artyukhin

X-ray and Neutron diffraction as well as muon spin relaxation and M\"ossbauer experiments performed on SrFe$_2$As$_2$ polycrystalls confirm a sharp first order transition at $T_0 = 205$,K corresponding to an orthorhombic phase distortion…

This article is dedicated to the 60-th anniversary of the Landau Institute for Theoretical Physics and presents a review of normal and superconducting properties of toroidal, altermagnetic, and noncentrosymmetric metals. Metals with…

Strongly Correlated Electrons · Physics 2026-02-05 V. P. Mineev

A ferroaxial ordering, which appears without mirror symmetry parallel to an electric axial moment, is described by a ferroic alignment of the electric toroidal (ET) dipole rather than the conventional electric and magnetic dipoles. Although…

Strongly Correlated Electrons · Physics 2023-11-23 Akimitsu Kirikoshi , Satoru Hayami

Certain two-dimensional (2D) materials exhibit intriguing properties such as valley polarization, ferroelectricity, superconductivity and charge-density waves. Many of these materials can be manually assembled into atomic-scale multilayer…

Materials Science · Physics 2019-07-24 Jiangtan Yuan , Andrew Balk , Hua Guo , Sahil Patel , Xuanhan Zhao , Qiyi Fang , Douglas Natelson , Scott Crooker , Jun Lou

In low dimensions, the combined effects of interactions and quantum fluctuations can lead to dramatically new physics distinct from that existing in higher dimensions. Here, we investigate the electronic and optical properties of…

We report a detailed investigation of the magnetic order in 192 stable magnetic two-dimensional materials from the Computational 2D Materials Database having one magnetic atom in the unit cell. The calculations are based on a systematic…

Materials Science · Physics 2024-08-09 Joachim Sødequist , Thomas Olsen

Centrosymmetric compounds which host three-dimensional topological spin structures comprise a distinct subclass of materials in which multiple-$\mathbf{q}$ magnetic order is stabilized by anisotropy and bond frustration in contrast to the…