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We present a detailed study of the structural, electronic, magnetic and ferroelectric properties of prototypical \textit{proper} and \textit{improper} multiferroic (MF) systems such as BiFeO$_{3}$ and orthorhombic HoMnO$_{3}$, respectively,…

Materials Science · Physics 2017-03-15 A. Stroppa , S. Picozzi

Lithium metasilicate (Li2SiO3) has attracted considerable interest as a promising electrolyte material for potential use in lithium batteries. However, its electronic properties are still not thoroughly understood. In this work, density…

Computational Physics · Physics 2020-01-22 Nguyen Thi Han , Vo Khuong Dien , Ngoc Thanh Thuy Tran , Duy Khanh Nguyen , Wu-Pei Su , Ming-Fa Lin

We have performed density functional calculations of the electronic structure and lattice dynamics of the binary skutterudite FeSb$_{3}$. We find that the ground state of FeSb$_{3}$ is a near semi-metallic ferromagnet with $T_{c}=175$~K.…

Materials Science · Physics 2015-01-26 Mikael Råsander , Lars Bergqvist , Anna Delin

Various physical properties (electronic, optical and thermoelectric) of cubic perovskite oxides $SrXO_3\; (X=Sc,\; Ge,\; Si)$ are investigated by using the density functional theory (DFT) within Wien2k code. This code is based on different…

Materials Science · Physics 2022-11-15 A Waqdim , M Agouri , A Abbassi , B. Elhadadi , Z. Zidane , S Taj , B Manaut , M Driouich , M El Idrissi

The electronic energy structures and magnetic properties of iron-based compounds with group VI elements (FeTe, BiFeO$_3$, SrFe$_{12}$O$_{19}$ and SrCoTiFe$_{10}$O$_{19}$) are studied using the density functional theory (DFT) methods.…

Materials Science · Physics 2015-10-05 G. E. Grechnev , A. A. Lyogenkaya , O. V. Kotlyar , A. S. Panfilov , V. P. Gnezdilov

Recent experimental work has realized a new insulating state of samarium nickelate (SmNiO$_3$), accessible in a reversible manner via high-density electron doping. To elucidate this behavior, we use the first-principles density functional…

Mesoscale and Nanoscale Physics · Physics 2019-11-27 Michele Kotiuga , Karin M. Rabe

The lattice constants of Strontium titanate perovskite has been studied using the Density functional theory formalism at the PBE and the HSE levels of theory. The study has been done in all the 3 existing phases; namely cubic, orthorhombic…

Materials Science · Physics 2021-12-22 Manaswita Kar

By applying density functional theory (DFT) approximations, we present a first-principles investigation of elastic properties for the experimentally verified phases of a metallic perovskite LaNiO$_{3}$. In order to improve the accuracy of…

Materials Science · Physics 2015-08-24 Šarūnas Masys , Valdas Jonauskas

We use density functional theory (DFT) calculations to study the lattice vibrations and electronic properties of the correlated metal LaNiO$_3$. To characterize the rhombohedral to cubic structural phase transition of perovskite LaNiO$_3$,…

Materials Science · Physics 2011-11-09 Gaoyang Gou , Ilya Grinberg , Andrew M. Rappe , James M. Rondinelli

Magnetic rare-earth orthoferrites $R$FeO$_3$ host a variety of functional properties from multiferroicity and strong magnetostriction, to spin-reorientation transitions and ultrafast light-driven manipulation of magnetism, which can be…

Materials Science · Physics 2023-04-12 Danila Amoroso , Bertrand Dupe , Matthieu J. Verstraete

We discuss relative roles played by the magnetic inversion symmetry breaking and the ferroelectric (FE) atomic displacements in the multiferroic state of YMnO3. For these purposes we derive a realistic low-energy model, using results of…

Materials Science · Physics 2012-10-12 I. V. Solovyev , M. V. Valentyuk , V. V. Mazurenko

Detailed structural measurements were conducted on a new perovskite, ScMnO3, and on orthorhombic LuMnO3. Complementary density functional theory (DFT) calculations were carried out, and predict that ScMnO3 possesses E-phase magnetic order…

Strongly Correlated Electrons · Physics 2015-06-19 T. Yu , T. A. Tyson , H. Y. Chen , A. M. M. Abeykoon , Y. -S. Chen , K. H. Ahn

First principles study of structural, elastic, and electronic properties of the cubic perovskitetype BaHfO$_3$ has been performed using the plane wave ultrasoft pseudo-potential method based on density functional theory with revised…

Materials Science · Physics 2008-09-23 Hongsheng Zhao , Aimin Chang , Yunlan Wang

A complete solid solution series between the t2g^4 perovskite ferromagnet SrRuO3 and the diamagnetic t2g^6 perovskite LaRhO3 has been prepared. The evolution with composition x in (SrRuO3)(1-x)(LaRhO3)(x) of the crystal structure and…

Materials Science · Physics 2012-10-03 Phillip T. Barton , Ram Seshadri , Matthew J. Rosseinsky

The experimental observation that vanadate superlattices (LaVO$_3$)$_m$/SrVO$_3$ show ferromagnetism up to room temperature [U.\ L\"uders {\it et al.}, Phys.\ Rev.\ B {\bf 80}, 241102R (2009)] is investigated by means of density functional…

Strongly Correlated Electrons · Physics 2016-12-13 Cosima Schuster , Ulrike Lueders , Udo Schwingenschloegl , Raymond Fresard

Recently, osmium diboride (OsB2) has attracted considerable attention as an incompressible and hard material. We investigate the structural property, elastic constants, and electronic structure of orthorhombic OsB2 by the first-principles…

Materials Science · Physics 2007-05-23 Z. F. Hou

The molybdate oxides SrMoO$_3$, PbMoO$_3$, and LaMoO$_3$ are a class of metallic perovskites that exhibit interesting properties including high mobility, and unusual resistivity behavior. We use first-principles methods based on density…

Materials Science · Physics 2021-08-20 Jeremy Lee-Hand , Alexander Hampel , Cyrus E. Dreyer

We calculate the properties of the 4$d$ ferromagnet SrRuO$_3$ in bulk and thin film form with the aim of understanding the experimentally observed metal to insulator transition at reduced thickness. Although the spatial extent of the 4$d$…

Materials Science · Physics 2008-10-08 James M. Rondinelli , Nuala M. Caffrey , Stefano Sanvito , Nicola A. Spaldin

We shed light on the interplay between structure and many-body effects relevant for itinerant ferromagnetism in LaAlO$_3$/SrTiO$_3$ heterostructures. The realistic correlated electronic structure is studied by means of the (spin-polarized)…

Materials Science · Physics 2014-08-27 Frank Lechermann , Lewin Boehnke , Daniel Grieger , Christoph Piefke

By means of density functional theory (DFT) calculations (with and without inclusion of spin-orbit (SO) coupling) we present a detailed study of the electronic structure and corresponding microscopic Hamiltonian parameters of Na2IrO3. In…

Strongly Correlated Electrons · Physics 2014-01-31 Kateryna Foyevtsova , Harald O. Jeschke , I. I. Mazin , D. I. Khomskii , Roser Valenti