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Related papers: High-density electron doping of SmNiO$_3$ from fir…

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Using density functional theory (DFT), this work explores barium zirconate doped with nitrogen. In addition, we used density functional theory (DFT) to study the BaZrO$_3$'s electrical, optical, and structural properties, and we found that…

Materials Science · Physics 2024-06-11 Iftkhar Ahmad

We report a systematic study of electron doping of Sr2RuO4 by non-isovalent substitution of La^(3+) for Sr^(2+). Using a combination of de Haas-van Alphen oscillations, specific heat, and resistivity measurements, we show that electron…

Strongly Correlated Electrons · Physics 2009-11-10 N. Kikugawa , A. P. Mackenzie , C. Bergemann , R. A. Borzi , S. A. Grigera , Y. Maeno

The addition of electron donors to the vacant A site of defect-perovskite structure tungsten trioxide causes a series of structural and chemical phase transitions; for instance, in the well-known case of the sodium tungsten bronzes…

Materials Science · Physics 2009-11-10 Andrew D. Walkingshaw , Nicola A. Spaldin , Emilio Artacho

The last few decades has seen the rapid growth of interest in the bulk perovskite-type transition metal oxides SrVO$_3$ and SrTiO$_3$. The electronic configuration of these perovskites differs by one electron associated to the transition…

Strongly Correlated Electrons · Physics 2023-09-04 A. D. N. James , M. Aichhorn , J. Laverock

First principles calculations through density functional theory (DFT)+$U$ method were performed to assess the effect of Li interstitial doping on the optoelectronic properties of NiO and of cubic, hexagonal, and monoclinic WO$_3$. The…

Recently, superconductivity was discovered in the infinite layer of hole-doped nickelates NdNiO$_{2}$. Contrary to this, superconductivity in LaNiO$_{2}$ is still under debate. This indicates the crucial role played by the $f$ electrons on…

Strongly Correlated Electrons · Physics 2023-02-09 Andrzej Ptok , Surajit Basak , Przemysław Piekarz , Andrzej M. Oleś

As a two-dimensional material with a hollow hexatomic ring structure, N\'eel-type anti-ferromagnetic (AFM) GdI3 can be used as a theoretical model to study the effect of electron doping. Based on first-principles calculations, we find that…

Materials Science · Physics 2023-05-11 Rong Guo , Yilv Guo , Yehui Zhang , Xiaoshu Gong , Tingbo Zhang , Xing Yu , Shijun Yuan , Jinlan Wang

Motivated by the recently reported signatures of superconductivity in trilayer La$_4$Ni$_3$O$_{10}$ under pressure, we comprehensively study this system using {\it ab initio} and random-phase approximation techniques. Without electronic…

Superconductivity · Physics 2024-09-24 Yang Zhang , Ling-Fang Lin , Adriana Moreo , Thomas A. Maier , Elbio Dagotto

Analysis of the band structure of TiS$_3$ single-layers suggests the possibility of changing their physical behaviour by injecting electron carriers. The anisotropy of the valence and conduction bands is explained in terms of their complex…

Materials Science · Physics 2017-05-10 J. A. Silva-Guillén , E. Canadell , P. Ordejón , F. Guinea , R. Roldán

In this paper we investigate the electronic and superconducting properties in nickelate compounds of NiO2 through Perturbative Density Functional Theory (P-DFT) and multi-band BCS theory. We consider three different cases of study (i) the…

Superconductivity · Physics 2021-12-16 Julian Faundez , C. A. Aguirre , S. G. Magalhães , J. Barba-Ortega

We present a density-functional theory (DFT) study of the structural, electronic, and chemical bonding behaviour in germanium (Ge)-doped vanadium dioxide (VO$_2$). Our motivation is to explain the reported increase of the metal-insulator…

Materials Science · Physics 2023-02-03 Peter Mlkvik , Claude Ederer , Nicola A. Spaldin

Motivated by recent photoemission measurements on the La$_{0.8}$Sr$_{0.2}$NiO$_2$, we carry out a systematic study of the infinite-layer nickelate using both dynamical mean-field theory and density matrix embedding theory. The renormalized…

Strongly Correlated Electrons · Physics 2024-11-07 Ziyan Chen , Yuxin Wang , Kun Jiang , Jiangping Hu

Density functional calculations are used to investigate the doping dependence of the electronic structure and magnetic properties in hexagonal Na$_x$CoO$_2$. The electronic structure is found to be highly two dimensional, even without…

Superconductivity · Physics 2009-11-10 D. J. Singh

The evolution of the electronic properties of electron-doped (Sr{1-x}La{x})2IrO4 is experimentally explored as the doping limit of La is approached. As electrons are introduced, the electronic ground state transitions from a spin-orbit Mott…

To understand the superconductivity recently discovered in Nd$_{0.8}$Sr$_{0.2}$NiO$_2$, we carried out LDA+DMFT (local density approximation plus dynamical mean-field theory) and magnetic force response calculations. The on-site correlation…

Superconductivity · Physics 2020-02-25 Siheon Ryee , Hongkee Yoon , Taek Jung Kim , Min Yong Jeong , Myung Joon Han

We report the thermoelectric properties (Seebeck coefficient, thermal conductivity, and electrical resistivity) of lightly doped single crystals of (001)-oriented SrTiO3 (STO). Hall effect measurements show that electron doping around 10^-5…

Strongly Correlated Electrons · Physics 2012-11-08 P. L. Bach , V. Leborán , V. Pardo , A. S. Botana , D. Baldomir , F. Rivadulla

Oxide semimetals exhibiting both nontrivial topological characteristics stand as exemplary parent compounds and multiple degrees of freedom, offering great promise for the realization of novel electronic states. In this study, we present…

Electron correlation and long-range magnetic ordering have a significant impact on the electronic structure and physical properties of solids. Here, we investigate the electronic structure of ilmenite MnTiO$_{3}$ using room temperature…

Strongly Correlated Electrons · Physics 2025-06-13 Asif Ali , R. K. Maurya , Sakshi Bansal , B. H. Reddy , Ravi Shankar Singh

We study magnetism in the electron-doped infinite-layer nickelate NdNiO$_2$. We perform an unrestricted Hartree-Fock calculation for a tight-binding model which contains both nickel and neodymium orbitals. We reproduce the self-doping…

Strongly Correlated Electrons · Physics 2025-09-25 Adam Kłosiński , Roman Drachynskyi , Krzysztof Wohlfeld , Wojciech Brzezicki

Substitution of La by Sr in the 25% Ni doped charge transfer insulator LaFeO3 creates structural changes that inflect the electrical conductivity caused by small polaron hopping via exchange interactions and charge transfer. The…