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Related papers: A hard X- ray probe to study doping-dependent elec…

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We use ab initio density functional calculations to study the effect of electron and hole doping on the equilibrium geometry and electronic structure of C, Si, and S monatomic wires. Independent of doping, all these nanowires are found to…

Materials Science · Physics 2009-11-13 Shinya Okano , David Tomanek

The semiconductor-insulator phase transition of the single-layer manganite La0.5Sr1.5MnO4 has been studied by means of high resolution synchrotron x-ray powder diffraction and resonant x-ray scattering at the Mn K edge. We conclude that a…

Strongly Correlated Electrons · Physics 2015-05-27 J. Herrero-Martin , J. Blasco , J. Garcia , G. Subias , C. Mazzoli

The effect of electron doping on the magnetic properties of the Brownmillerite-type bilayered compounds has been investigated by neutron powder diffraction in La substituted Ca2.5-xLaxSr0.5GaMn2O8 compounds (x = 0.05 and 0.1), in comparison…

Strongly Correlated Electrons · Physics 2012-05-18 A. K. Bera , S. M. Yusuf , I. Mirebeau

Dilute magnetic semiconductors (DMS) are nonmagnetic semiconductors doped with magnetic transition metals. The recently discovered DMS material (Ba$_{1-x}$K$_{x}$)(Zn$_{1-y}$Mn$_{y}$)$_{2}$As$_{2}$ offers a unique and versatile control of…

Materials Science · Physics 2018-03-28 M. A. Surmach , B. J. Chen Z. Deng , C. Q. Jin , J. K. Glasbrenner , I. I. Mazin , A. Ivanov , D. S. Inosov

The simultaneous presence of sizable spin-orbit interactions and electron correlations in iridium oxides has led to predictions of novel ground states including Dirac semimetals, Kitaev spin liquids, and superconductivity. Electron and hole…

Strongly Correlated Electrons · Physics 2017-02-22 S. Chikara , G. Fabbris , J. Terzic , G. Cao , D. Khomskii , D. Haskel

We investigate the evolution of magnetic properties as a function of hydrogen doping in iron based superconductor LaFeAsO$_{1-x}$H$_x$ using the dynamical mean-field theory combined with the density-functional theory. We find that two…

Strongly Correlated Electrons · Physics 2017-01-04 Chang-Youn Moon , Hyowon Park , Kristjan Haule , Ji Hoon Shim

The structural and magnetic behavior of Mn-site doped intermetallic manganese silicide alloys of nominal compositions Mn$_{5-x}$A$_x$Si$_3$ ($x$ = 0.05, 0.1, 0.2 and A = Ni, Cr) have been investigated with a focus to the inverted hysteresis…

Materials Science · Physics 2020-06-01 S. C. Das , K. Mandal , N. Khamaru , S. Pramanick , S. Chatterjee

Self-interaction corrected local spin density approximation calculations were performed for La$_{(1-x)}$Sr$_x$MnO$_3$ (LSMO) ($0.0<x<0.5$). The influence and inter-relationship of Sr doping, magnetic structure, O displacements and phase…

Strongly Correlated Electrons · Physics 2009-11-10 G. Banach , W. M. Temmerman

The effects of electron (Ir) and hole (Re) doping on the hybridization gap and antiferromagnetic order have been studied by magnetization, muon spin relaxation ($\mu^+$SR), and inelastic neutron scattering on the polycrystalline samples of…

Strongly Correlated Electrons · Physics 2014-11-26 A. Bhattacharyya , D. T. Adroja , A. M. Strydom , J. Kawabata , T. Takabatake , A. D . Hillier , V. Garcia Sakai , J. W. Taylor , R. I. Smith

By means of oxide molecular beam epitaxy with shutter-growth mode, we have fabricated a series of electron-doped (Sr1-xLax)2IrO4(001)(x = 0, 0.05, 0.1 and 0.15) single crystalline thin films and then investigated the doping dependence of…

Strongly Correlated Electrons · Physics 2015-04-27 M. Y. Li , Z. T. Liu , H. F. Yang , J. L. Zhao , Q. Yao , C. C. Fan , J. S. Liu , B. Gao , D. W. Shen , X. M. Xie

We report the success in introducing Mn into (Li1-xFex)OHFe1-ySe superconducting crystals by applying two different hydrothermal routes, ion exchange (1-Step) and ion release/introduction (2-Step). The micro-region x-ray diffraction and…

The evolution of electronic (spin and charge) excitations upon carrier doping is an extremely important issue in superconducting layered cuprates and the knowledge of its asymmetry between electron- and hole-dopings is still fragmentary.…

The atomic pair distribution function (PDF) technique is employed to probe the atomic local structural responses in naturally double layered manganites \lsmo in the doping range $0.54 \leq x \leq 0.80$. Our low temperature neutron powder…

Strongly Correlated Electrons · Physics 2009-11-10 Xiangyun Qiu , Simon J. L. Billinge , Carmen R. Kmety , John F. Mitchell

The chemical and magnetic structures of the series of compounds Ca$_{2-x}$La$_x$RuO$_4$ [$x = 0$, $0.05(1)$, $0.07(1)$, $0.12(1)$] have been investigated using neutron diffraction and resonant elastic x-ray scattering. Upon La doping, the…

We investigate how field-effect doping affects the structural properties, the electronic structure and the Hall coefficient of few-layers transition metal dichalcogenides by using density-functional theory. We consider mono-, bi-, and…

Mesoscale and Nanoscale Physics · Physics 2015-05-05 Thomas Brumme , Matteo Calandra , Francesco Mauri

The combination of x-ray spectroscopy methods complemented with theoretical analysis unravels the coexistence of paramagnetic and antiferromagnetic phases in the Zn_0.9Mn_0.1O shell deposited onto array of wurtzite ZnO nanowires. The shell…

We investigate the electronic structure of nickelate superconductor NdNiO2 upon hole doping, by means of density-functional theory and dynamical mean-field theory. We demonstrate the strong intrinsic hybridization between strongly…

Strongly Correlated Electrons · Physics 2021-01-13 Zhao Liu , Chenchao Xu , Chao Cao , W. Zhu , Z. F. Wang , Jinlong Yang

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

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 magnon energy and amplitude renormalization due to intraband particle-hole excitations are studied in a metallic antiferromagnet. The change in sign of the intraband contribution with $\omega$ results in significant differences between…

Strongly Correlated Electrons · Physics 2007-05-23 Avinash Singh
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