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Related papers: Is N-doped SrO magnetic? A first-principles view

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Structural and magnetic properties of the doped terbium manganites (Tb,A)MnO3 (A = Gd, Dy and Ho) have been investigated using first-principles calculations and further confirmed by subse- quent experimental studies. Both computational and…

Materials Science · Physics 2015-07-14 Vinit Sharma , A. McDannald , M. Staruch , R. Ramprasad , M. Jain

We have used a combination of resonant magnetic x-ray scattering (RMXS) and x-ray absorption spectroscopy (XAS) to investigate the properties of the doped spin-orbital Mott insulator Sr2Ir(1-x)Rh(x)O4 (0.07 < x < 0.70). We show that…

Strongly Correlated Electrons · Physics 2014-02-12 J. P. Clancy , A. Lupascu , H. Gretarsson , Z. Islam , Y. F. Hu , D. Casa , C. S. Nelson , S. C. Lamarra , G. Cao , Young-June Kim

We studied structural and magnetic properties of a series of insulating double perovskite compounds, La$_{2-x}$Sr$_{x}$CuRuO$_{6}$ (0 $\le$ x $\le$ 1), representing doping via \textit{A}-site substitution. The end members…

Strongly Correlated Electrons · Physics 2012-09-19 P. Anil Kumar , R. Mathieu , R. Vijayaraghavan , Subham Majumdar , Olof Karis , P. Nordblad , Biplab Sanyal , Olle Eriksson , D. D. Sarma

Density functional theory with local spin density approximation has been used to propose possible room temperature ferromagnetism in N-doped NaCl-type BaO. Pristine BaO is a wide bandgap semiconductor, however, N induces a large density of…

Materials Science · Physics 2015-05-05 Gul Rahman

We calculate the nature of magnetic interactions in transition-metal doped ZnO using the local spin density approximation and LSDA+\textit{U} method of density functional theory. We investigate the following four cases: (i) single…

Materials Science · Physics 2009-11-11 Priya Gopal , Nicola A. Spaldin

We present a comprehensive study of the energetics and magnetic properties of ZnO clusters doped with 3d transition metals (TM) using ab initio density functional calculations in the framework of generalized gradient approximation + Hubbard…

Materials Science · Physics 2015-05-20 Nirmal Ganguli , Indra Dasgupta , Biplab Sanyal

One challenge in condensed-matter physics is to unravel the interplay between magnetism and superconductivity in copper oxides with a high critical temperature (Tc). Kang et al. claim to have revealed a quantum phase transition from the…

Condensed Matter · Physics 2007-05-23 P. K. Mang , S. Larochelle , M. Greven

The role of various magnetic inter-chain couplings has been investigated recently by numerical methods in doped frustrated quantum spin chains. A non-magnetic dopant introduced in a gapped spin chain releases a free spin-1/2 soliton. The…

Strongly Correlated Electrons · Physics 2009-11-10 Nicolas Laflorencie , Didier Poilblanc

We present a theory of magnetic (Ni) and nonmagnetic (Zn) impurities substituted into planar Cu sites in the normal state of underdoped cuprates exhibiting a spin gap. Both types of impurities induce magnetic moments on neighboring Cu…

Strongly Correlated Electrons · Physics 2009-10-31 G. Khaliullin , R. Kilian , S. Krivenko , P. Fulde

Our purpose is to study role of ionic radii of non-magnetic dopants; Li+ (0.68 {\AA}), Mg2+ (0.72 {\AA}) and K+ (1.38 {\AA}) on the magnetic property of rutile TiO2 compound. The Ti0.94A0.06O2 (A=Li, Mg, K) compounds have been synthesized…

Materials Science · Physics 2015-10-19 S. K. Srivastava , M. Brahma , B. Brahma , G. Bouzerar

Effect of Co, Ru and Cu substitution at B and B' sites on the magnetic and transport properties of LaSrCoRuO$_6$ have been investigated. All the doped compositions crystallize in the monoclinic structure in the space group $P2_1/n$…

Strongly Correlated Electrons · Physics 2010-11-12 P. S. Ramu Murthy , K. R. Priolkar , P. A. Bhobe , A. Das , P. R. Sarode , A. K. Nigam

Superconductivity with a remarkably high $T_c$ has recently been found in Sr-doped NdNiO$_2$ thin films. While this system bears strong similarities to the cuprates, some differences, such as a weaker antiferromagnetic exchange coupling and…

Strongly Correlated Electrons · Physics 2020-01-15 Philipp Werner , Shintaro Hoshino

To explore how anion substitution modifies the existing magnetism in strongly correlated oxides, we investigate local electronic states and magnetic ordering in nickel oxide (NiO) induced by substituting oxygen (O) with nitrogen (N). Each N…

We have studied the magnetic excitations of electron-doped Sr$_{2-x}$La$_x$IrO$_4$ ($0 \leq x \leq 0.10$) using resonant inelastic x-ray scattering (RIXS) at the Ir L$_3$-edge. The long range magnetic order is rapidly lost with increasing…

First principles calculations of the O surfaces of Co-ZnO show that substitutional Co ions develop large magnetic moments which long-range coupling depends on their mutual distance. The local spin polarization induced at the O atoms is…

Materials Science · Physics 2009-11-13 N. Sanchez , S. Gallego , M. C. Munoz

Spin-polarized band calculations for supercells of SrB$_{6}$, where a La-, In- or Al- impurity or a vacancy is replacing one Sr, are performed within the local spin density approximation. Moderately large cells with 8 formula units (56…

Materials Science · Physics 2009-11-07 T. Jarlborg

We synthesized pure and Co-doped (6.25 12.5 at.) ZrO$_2$ nanopowders in order to study their magnetic properties.We analyzed magnetic behavior as a function of the amount of Co and the oxygenation, which was controlled by low pressure…

Magnetic properties of the silver vanadium phosphate Ag(2)VOP(2)O(7) are studied by means of magnetic susceptibility measurements and electronic structure calculations. In spite of the layered crystal structure suggesting 1D or 2D magnetic…

Strongly Correlated Electrons · Physics 2008-03-27 Alexander A. Tsirlin , Ramesh Nath , Christoph Geibel , Helge Rosner

We study the static magnetic correlations in lightly doped La(2-x)Sr(x)CuO(4) within the framework of a dipolar frustration model for a canted antiferromagnet. We show that the stability of the canted Neel state for x<2% is due to the…

Strongly Correlated Electrons · Physics 2007-05-23 V. Juricic , M. B. Silva Neto , C. Morais Smith

The effects of nonmagnetic Zn and magnetic Ni substitution for Cu site on magnetism are studied by measurements of uniform magnetic susceptibility for lightly doped La_{2-x}Sr_xCu_{1-z}M_zO_4 (M=Zn or Ni) polycrystalline samples. For the…

Superconductivity · Physics 2009-11-10 T. Machi , I. Kato , R. Hareyama , N. Watanabe , Y. Itoh , N. Koshizuka , S. Arai , M. Murakami