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Related papers: Half-Metallicity of LSMO

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We have analyzed the experimental evidence of charge and orbital ordering in La0.5Sr1.5MnO4 using first principles band structure calculations. Our results suggest the presence of two types of Mn sites in the system. One of the Mn sites…

Strongly Correlated Electrons · Physics 2009-11-07 Priya Mahadevan , K. Terakura , D. D. Sarma

Modulation-doped oxide two-dimensional electron gas (2DEG) formed at the LaMnO3 (LMO) buffered disorderd-LaAlO3/SrTiO3 (d-LAO/LMO/STO) heterointerface, provides new opportunities for electronics as well as quantum physics. Herein, we…

Materials Science · Physics 2017-04-05 Y. Z. Chen , Y. L. Gan , D. V. Christensen , Y. Zhang , N. Pryds

The electronic structure and equilibrium geometry of La2/3Sr1/3MnO3 are studied theoretically by means of density functional calculations. The doping is treated by introducing holes and a compensating jellium background. The results for the…

Materials Science · Physics 2009-11-11 V. Ferrari , J. M. Pruneda , Emilio Artacho

Half-metals have fully spin polarized charge carriers at the Fermi surface. Such polarization usually occurs due to strong electron--electron correlations. Recently [Phys. Rev. Lett. {\bf{119}}, 107601 (2017)], we have demonstrated…

Strongly Correlated Electrons · Physics 2018-11-13 A. L. Rakhmanov , A. O. Sboychakov , K. I. Kugel , A. V. Rozhkov , Franco Nori

We present a brief review of experimental and theoretical papers on studies of electron transport and magnetic properties in manganese-based compounds Mn$_2$YZ and Mn$_3$Z (Y = V, Cr, Fe, Co, Ni, etc.; Z = Al, Ge, Sn, Si, Pt, etc.). It has…

Materials Science · Physics 2023-09-26 V. V. Marchenkov , V. Yu. Irkhin

We derive a simple relational expression between the spin polarization ratio of resistivity, $P_\rho$, and the anisotropic magnetoresistance ratio $\Delta \rho/\rho$, and that between the spin polarization ratio of the density of states at…

Materials Science · Physics 2016-09-20 Satoshi Kokado , Yuya Sakuraba , Masakiyo Tsunoda

High-field electron spin resonance (ESR) experiments have been carried out in single crystals of La_{1-x}Sr_xMnO_3 in the concentration range 0 \le x \le 0.175. Different quasioptical arrangements have been utilized in the frequency range…

Strongly Correlated Electrons · Physics 2009-11-07 D. Ivannikov , M. Biberacher , H. -A. Krug von Nidda , A. Pimenov , A. A. Mukhin , A. M. Balbashov

Scaling relations in the charge and spin excitations of (La,Sr)MnO3 are studied from both theoretical and experimental points of view. In the ferromagnetic metal phase, we investigate optical conductivity and neutron inelastic scattering,…

Strongly Correlated Electrons · Physics 2007-05-23 Nobuo Furukawa , Yutaka Moritomo , K. Hirota , Y. Endoh

We have used time-of-flight inelastic neutron scattering to measure the spin wave spectrum of the canonical half-doped manganite Pr$_{0.5}$Ca$_{0.5}$MnO$_{3}$, in its magnetic and orbitally ordered phase. The data, which cover multiple…

Strongly Correlated Electrons · Physics 2016-07-25 R. A. Ewings , T. G. Perring , O. Sikora , D. L. Abernathy , Y. Tomioka , Y. Tokura

First principles total-energy pseudopotential calculations have been performed to investigate STM images of the (110) cross-sectional surface of Mn-doped GaAs. We have considered configurations with Mn in interstitial positions in the…

Materials Science · Physics 2007-05-23 A. Stroppa

The half-Heusler alloy NiMnSb is one of the local-moment ferromagnets with unique properties for future applications. Band structure calculations predict exclusively majority bands at the Fermi level, thus indicating {100%} spin…

Strongly Correlated Electrons · Physics 2009-11-13 J Minár , J Braun , S Bornemann , H Ebert , M Donath

The magnetic lattice of mixed-valence Mn ions in La$_{0.7}$Sr$_{0.3}$MnO$_3$ is selectively diluted by partial substitution of Mn by Al or Ti. The ferromagnetic transition temperature and the saturation moment decreases with substitution in…

Materials Science · Physics 2009-11-11 D. N. H. Nam , L. V. Bau , N. V. Khiem , N. V. Dai , L. V. Hong , N. X. Phuc , R. S. Newrock , P. Nordblad

We present the synthesis and the NMR characterization of a 17O enriched LaMnO3 crystalline sample. We checked that it is single phase and, more important, stochiometric in oxygen. Its 17O enrichment estimated by NMR is about 5.5%. These…

Materials Science · Physics 2011-07-06 L. Pinsard Loreynne-Gaudart , A. Trokiner , S. Verkhovskii , A. Gerashenko , N. Dragoe

In order to study the magnetic and crystal structures in the Nd{1-x}Sr{x}MnO{3} system, we have peformed neutron diffraction measurements on melt-grown polycrystalline samples with 0.49 < x < 0.75. As a function of hole concentration x, the…

Strongly Correlated Electrons · Physics 2009-10-31 R. Kajimoto , H. Yoshizawa , H. Kawano , H. Kuwahara , Y. Tokura , K. Ohoyama , M. Ohashi

A comprehensive analysis of half-doped manganites is presented using Monte Carlo simulations applied to the double-exchange model with cooperative Jahn-Teller lattice distortions in two dimensions. A variety of novel results are reported:…

Strongly Correlated Electrons · Physics 2009-11-10 H. Aliaga , D. Magnoux , A. Moreo , D. Poilblanc , S. Yunoki , E. Dagotto

The layered 5d transition metal oxide Sr2IrO4 has been shown to host a novel Jeff=1/2 Mott spin orbit insulating state with antiferromagnetic ordering, leading to comparisons with the layered cuprates. Here we study the effect of…

Strongly Correlated Electrons · Physics 2015-03-20 S. Calder , G. -X. Cao , M. D. Lumsden , J. W. Kim , Z. Gai , B. C. Sales , D. Mandrus , A. D. Christianson

Using angle-resolved photoemission spectroscopy (ARPES), we investigate the electronic band structure and Fermi surface of ferromagnetic La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ ($x=0.38$). Besides the expected two hole pockets and one electron…

Polycrystalline YMn1-xFexO3 (YMFO_x) (0 <= x <= 0.1) compounds have been prepared in single phase and characterized by synchrotron X-ray diffraction, X-ray absorption near edge spectroscopy, magnetization, and dielectric measurements.…

Materials Science · Physics 2017-07-26 Sonu Namdeo , A. K. Sinha , M. N. Singh , A. M. Awasthi

Electronic structures of multiferroic RMnO$_3$ (R=Y, Er) have been investigated by employing photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). We have found that Mn ions in RMnO$_3$ are in the trivalent high-spin…

Materials Science · Physics 2007-05-23 J. -S. Kang , S. W. Han , J. -G. Park , S. C. Wi , S. S. Lee , G. Kim , H. J. Song , H. J. Shin , W. Jo , B. I. Min

Films of cerium-doped LaMnO$_3$, which has been intensively discussed as an electron-doped counterpart to hole-doped mixed-valence lanthanum manganites during the past decade, were analyzed by x-ray photoemission spectroscopy with respect…

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