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High real-space-resolution atomic pair distribution functions of La_(1-x)Ca_(x)MnO_3 (x=0.12, 0.25 and 0.33) have been measured using high-energy x-ray powder diffraction to study the size and shape of the MnO_6 octahedron as a function of…

Materials Science · Physics 2009-10-31 S. J. L. Billinge , Th. Proffen , V. Petkov , J. L. Sarrao , S. Kycia

We employ the combination of the density functional and the dynamical mean-field theory (LDA+DMFT) to investigate the electronic structure and magnetic properties of SrCoO3, monocrystal of which were prepared recently. Our calculations lead…

Strongly Correlated Electrons · Physics 2012-09-25 J. Kuneš , V. Křápek , N. Parragh , G. Sangiovanni , A. Toschi , A. V. Kozhevnikov

Strontium doping transforms manganites of type La(1-x)Sr(x)MnO(3) from an insulating antiferromagnet (x=0) to a metallic ferromagnet (x>0.16) due to the induced charge carriers (holes). Neutron scattering experiments were employed to…

Materials Science · Physics 2017-03-21 A. Furrer , A. Podlesnyak , E. Pomjakushina , V. Pomjakushin

We have investigated orbital ordering in the half-doped manganite La$_{0.5}$Sr$_{1.5}$MnO$_4$, which displays spin, charge and orbital ordering, by means of unrestricted Hartree-Fock calculations on the multiband $p$-$d$ model. From recent…

Strongly Correlated Electrons · Physics 2009-11-11 K. Ebata , T. Mizokawa , A. Fujimori

We investigate the effect of Mn substitution in Fe$_2$Ti$_{1-x}$Mn$_x$Sn on electronic structure and magnetic and electrical transport properties. The spin-polarized density of states calculations using density-functional theory (DFT)…

Materials Science · Physics 2025-08-20 Kulbhushan Mishra , Shishir Kumar Pandey , S. Chaudhuri , Rajeev Rawat , P. A. Bhobe

Half-metallicity (full spin polarization of the Fermi surface) usually occurs in strongly correlated electron systems. We demonstrate that doping a spin-density wave insulator in the weak-coupling regime may also stabilize half-metallic…

Strongly Correlated Electrons · Physics 2019-03-06 A. V. Rozhkov , A. L. Rakhmanov , A. O. Sboychakov , K. I. Kugel , F. Nori

The bilayered member of the Ruddesden-Popper family of ruthenates, Sr$_3$Ru$_2$O$_7$, has received an increasing attention due to its interesting properties and phases. By using first principle calculations we find that the ground-state is…

Strongly Correlated Electrons · Physics 2017-05-10 Pablo Rivero , Vincent Meunier , William Shelton

The half-Heusler compound CuMnSb, the first antiferromagnet (AFM) in the Mn-based class of Heuslers and half-Heuslers that contains several conventional and half metallic ferromagnets, shows a peculiar stability of its magnetic order in…

Strongly Correlated Electrons · Physics 2009-11-11 T. Jeong , Ruben Weht , W. E. Pickett

We present the self-interaction corrected local spin density (SIC-LSD) electronic structure and total energy calculations, leading also to valencies of the ground state configurations, for the half-metallic double perovskites such as…

Strongly Correlated Electrons · Physics 2009-11-10 Z. Szotek , W. M. Temmerman , A. Svane , L. Petit , H. Winter

Understanding the magnetic properties of the various Mn doping configurations that can be encountered in $2H$-MoS$_2$ monolayer could be beneficial for its use in spintronics. Using density functional theory plus Hubbard U (DFT$+$U)…

Materials Science · Physics 2019-09-04 Adlen Smiri , Iann Gerber , Samir Lounis , Sihem Jaziri

Using x-ray and neutron scattering, we have studied the structural and magnetic properties of the single-layer manganite La{1-x}Sr{1+x}MnO4 (0 < x < 0.7). Single crystals were grown by the traveling-solvent floating-zone method at 18 La/Sr…

Strongly Correlated Electrons · Physics 2009-11-10 S. Larochelle , A. Mehta , L. Lu , P. K. Mang , O. P. Vajk , N. Kaneko , J. W. Lynn , L. Zhou , M. Greven

Using valence band photoemission we have demonstrated the presence of a pseudogap in the near Fermi level electronic spectrum of some of the mixed phase compositions of Sm$_{1-x}$Ca$_x$MnO$_3$ system. The pseudogap was found to grow in size…

Materials Science · Physics 2008-05-07 P. Pal , M. K. Dalai , R. Kundu , B. R. Sekhar , C. Martin

Atomic, electronic, and magnetic structure of LaSrCo$_{1/2}$Fe$_{1/2}$O$_4$ mixed-metal Ruddlesden-Popper oxide is investigated theoretically using self-consistent ACBN0 DFT + $U$ approach. We show that the electronic and magnetic…

Using density functional theory we have performed theoretical investigations of the electronic properties of a free-standing one-dimensional organometallic vanadium-benzene wire. This system represents the limiting case of multi-decker…

Materials Science · Physics 2016-08-31 Volodymyr V. Maslyuk , Alexei Bagrets , Thomas Bredow , Ingrid Mertig

The density of non-quasiparticle states in the ferrimagnetic full-Heuslers Mn$_2$VAl alloy is calculated from first principles upon appropriate inclusion of correlations. In contrast to most half-metallic compounds, this material displays…

Materials Science · Physics 2014-04-15 L. Chioncel , E. Arrigoni , M. I. Katsnelson , A. I. Lichtenstein

We have investigated the crystal structure and magnetic properties for polycrystalline samples of LaMn1-xFexO3+y, in the whole range x=0.0 to x=1.0, prepared by solid state reaction in air. All samples show the ORT-2 orthorhombic structure…

Strongly Correlated Electrons · Physics 2009-11-13 O. F. de Lima , J. A. H. Coaquira , R. L. de Almeida , L. B. de Carvalho , S. K. Malik

Magnetic structures and the relationship between spin and charge-orbital orderings of an A-site ordered double-perovskite manganite SmBaMn2O6, an anticipated multiferroic material, were investigated by means of neutron diffraction. The spin…

Strongly Correlated Electrons · Physics 2021-07-14 Ryoji Kiyanagi , Shigeki Yamada , Hiroshi Aoki , Hajime Sagayama , Taketo Moyoshi , Akiko Nakao , Takahisa Arima

The valence and spin state evolution of Mn and Co on TbMn$_{\rm 1-x}$Co$_{\rm x}$O$_3$ series is precisely determined by means of soft and hard x-ray absorption spectroscopy (XAS) and K$\beta$ x-ray emission spectroscopy (XES). Our results…

Materials Science · Physics 2016-10-25 V. Cuartero , S. Lafuerza , M. Rovezzi , J. Garcia , J. Blasco , G. Subias , E. Jiménez

The doping effect of Sr and transition metals Mn, Fe, Co into the direct-gap semiconductor LaZnAsO has been investigated. Our results indicate that the single phase ZrCuSiAs-type tetragonal crystal structure is preserved in…

Strongly Correlated Electrons · Physics 2015-06-17 Jicai Lu , Huiyuan Man , Cui Ding , Quan Wang , Biqiong Yu , Shengli Guo , Hangdong Wang , Bin Chen , Wei Han , Changqing Jin , Yasutomo J. Uemura , F. L. Ning

We performed a systematic study of soft X-ray absorption spectroscopy in various manganese oxides and fluorides. Both Mn L-edges and ligand (O and F) K-edges are presented and compared with each other. Despite the distinct crystal structure…

Materials Science · Physics 2012-11-09 Ruimin Qiao , Timothy Chin , Stephen J. Harris , Shishen Yan , Wanli Yang