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Ca$_{3}$Ru$_{2}$O$_{7}$ is a polar metal that belongs to the class of multiferroic magnetic materials. Here, tiny amounts of Fe doping in the Ru sites bring about dramatic changes in the electronic and magnetic properties and generate a…

Strongly Correlated Electrons · Physics 2022-02-21 G. Lamura , D. Das , T. Shang , J. Peng , Y. Wang , Z. Q. Mao , T. Shiroka

We report the measurements of resistivity and magnetization under magnetic fields parallel and perpendicular to the basal plane, respectively, on a cobalt-doped Eu(Fe$_{0.89}$Co$_{0.11}$)$_{2}$As$_{2}$ single crystal. We observed a…

Superconductivity · Physics 2009-11-25 Shuai Jiang , Hui Xing , Guofang Xuan , Zhi Ren , Cao Wang , Zhu-an Xu , Guanghan Cao

Sr2IrO4 is an archetypal spin-orbit-coupled Mott insulator with an antiferromagnetic state below 240 K. Here we report results of our study on single crystals of Sr2Ir1-xFexO4 (0<x<0.32) and Sr2Ir1-xCoxO4 (0<x<0.22). Fe doping retains the…

Strongly Correlated Electrons · Physics 2020-12-21 Bing Hu , Hengdi Zhao , Yu Zhang , Pedro Schlottmann , Feng Ye , Gang Cao

Among the 3d transition metal ions doped polar Ni3TeO6, Mn-doped Ni3TeO6 has stimulated great interest due to its high magnetic ordering temperature and complex magnetic phases, but the mechanism of magnetoelectric (ME) coupling is far from…

We have studied the evolution of magnetic and orbital excitations as a function of hole-doping in single crystal samples of Sr2Ir(1-x)Rh(x)O4 (0.07 < x < 0.42) using high resolution Ir L3-edge resonant inelastic x-ray scattering (RIXS).…

Strongly Correlated Electrons · Physics 2019-09-18 J. P. Clancy , H. Gretarsson , M. H. Upton , Jungho Kim , G. Cao , Young-June Kim

The spin-density functional theory (DFT) and DFT+$U$ with Hubbard $U$ term accounting for on-site Coulomb interactions were applied to investigate structure, stability, and electronic properties of different terminations of the…

Materials Science · Physics 2015-06-03 Adam Kiejna , Tomasz Ossowski , Tomasz Pabisiak

We report occurrence of large magnetoresistance in lightly doped antiferromagnetic paraelectric EuTiO3. Reports of magnetoresistance in rare-earth titanates (RTiO3 oxides) are very scarce because they are highly insulating at low…

Strongly Correlated Electrons · Physics 2017-09-13 Km Rubi , R. Mahendiran

In the present work, we have prepared Mn-doped Ge using different annealing approaches after Mn ion implantation, and obtained samples with hole concentrations ranging from 10^18 to 2.1x10^20 cm^-3, the latter being the highest reported so…

We report the magnetic and electronic properties of the bilayer ruthenate Sr$_3$Ru$_2$O$_7$ upon Fe substitution for Ru. We find that Sr$_3$(Ru$_{1-x}$Fe$_x$)$_2$O$_7$ shows a spin-glass-like phase below 4 K for $x$ = 0.01 and commensurate…

Strongly Correlated Electrons · Physics 2018-02-21 M. Zhu , Y. Wang , P. G. Li , J. J. Ge , W. Tian , D. Keavney , Z. Q. Mao , X. Ke

Motivated by the recent activities on the Ni-based diamond lattice antiferromagnet NiRh$_2$O$_4$, we theoretically explore on a general ground the unique spin and orbital physics for the Ni$^{2+}$ ions with a $3d^8$ electron configuration…

Strongly Correlated Electrons · Physics 2019-07-10 Fei-Ye Li , Gang Chen

The electronic structural properties in the presence of constrained magnetization and a charged background are studied for a monolayer of FeSe in non-magnetic, checkerboard-, and striped-antiferromagnetic (AFM) spin configurations. First…

Superconductivity · Physics 2013-02-12 Timur Bazhirov , Marvin L. Cohen

We report the synthesis and characterization of a rare-earth dichalcogenide EuTe$_2$. An antiferromagnetic transition was found at T$_M$ = 11 K. The antiferromagnetic order can be tuned by an applied magnetic field to access a first-order…

Materials Science · Physics 2020-02-05 Junjie Yin , Changwei Wu , Lisi Li , Jia Yu , Hualei Sun , Bing Shen , Benjamin A. Frandsen , Dao-Xin Yao , Meng Wang

One of the key factors behind the rapid evolution of molecular spintronics is the efficient realization of spin manipulation of organic molecules with a magnetic center. The spin state of such molecules may depend crucially on the…

Magnetic rare-earth orthoferrites $R$FeO$_3$ host a variety of functional properties from multiferroicity and strong magnetostriction, to spin-reorientation transitions and ultrafast light-driven manipulation of magnetism, which can be…

Materials Science · Physics 2023-04-12 Danila Amoroso , Bertrand Dupe , Matthieu J. Verstraete

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

Mott insulators based on $4d$ and $5d$ transition-metal ions, where spin-orbit interaction plays a key role, can exhibit various forms of unusual magnetism. A particular example is the antiferromagnet Ca$_2$RuO$_4$ containing $d^4$…

Strongly Correlated Electrons · Physics 2025-05-16 Jan Revenda , Krzysztof Wohlfeld , Jiří Chaloupka

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 synthesized and characterized the colloidal suspensions of $FeO \cdot Fe_{(2-x)}Nd_{x}O_{3}$ nanoparticles with $x=0.00, 0.02, 0.04, 0.06 \text{ and }0.1.$ The effect of the $Fe^{3+}$ ion replacement by $Nd^{3+}$ on the crystal structure…

We calculate the effect of local magnetic moments on the electron-phonon coupling in BaFe$_{2}$As$_{2}+\delta$ using the density functional perturbation theory. We show that the magnetism enhances the total electron-phonon coupling by $\sim…

Superconductivity · Physics 2010-09-13 Lilia Boeri , Matteo Calandra , Igor I. Mazin , Oleg V. Dolgov , Francesco Mauri

Antisymmetric Dzyaloshinskii-Moriya (DM) interactions generating from the spin-orbit coupling induce various fascinating properties, like magnetoelectric (ME) effect, weak ferromagnetism and non-trivial topological spin textures like…

Materials Science · Physics 2022-03-09 Hena Das