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Oxygen isotope effects on the transport properties have been studied in high-quality epitaxial thin films of La_{0.75}Ca_{0.25}MnO_{3} and Nd_{0.7}Sr_{0.3}MnO_{3}. In the paramagnetic state, the resistivity can be well fitted by \rho (T) =…

强关联电子 · 物理学 2007-05-23 G. M. Zhao , D. J. Kang , W. Prellier , M. Rajeswari , H. Keller , T. Venkatesan , R. L. Greene

Based on a recent claim [Phys. Rev. Lett. 116, 127203 (2016)] that electron vortex can be used to image magnetism at the nanoscale in elastic scattering experiments, using transmission electron microscopy, a comprehensive computational…

材料科学 · 物理学 2016-11-23 Alexander Edström , Axel Lubk , Ján Rusz

We have synthesized epitaxial La(1-x)Sr(1+x)MnO4 (x=1/3) films as random alloys and cation-ordered analogues to probe how cation order affects the properties of a 2D manganite. The films show weak ferromagnetic ordering up to 130 K,…

强关联电子 · 物理学 2015-05-20 B. B. Nelson-Cheeseman , A. B. Shah , T. S. Santos , S. D. Bader , J. -M. Zuo , A. Bhattacharya

The effect of high pressure (0 - 8 GPa) on the magnetic structure of polycrystalline samples of La0.5Ca0.5-xSrxMnO3 (0.1 -< x -< 0.4) manganites at 5 K is investigated using neutron diffraction technique. Application of pressure is found to…

材料科学 · 物理学 2015-05-18 Indu Dhiman , Thierry Strässle , L. Keller , B. Padmanabhan , A. Das

We study the effect of uniform uniaxial strain on the ground state electronic configuration of a thin film manganite. Our model Hamiltonian includes the double-exchange, the Jahn-Teller electron-lattice coupling, and the antiferromagnetic…

强关联电子 · 物理学 2011-07-25 A. Baena , L. Brey , M. J. Calderon

It is shown theoretically that a giant magnetoelectric susceptibility exceeding 10^-6 s/m may be achieved in the ferromagnetic/ferroelectric epitaxial systems via the magnetization rotation induced by an electric field applied to the…

材料科学 · 物理学 2009-11-13 N. A. Pertsev

We studied the effect of magnetic doping with Gd atoms on the superconducting properties of amorphous Mo70Ge30 films. We observed that in uniform films deposited on amorphous Ge, the pair-breaking strength per impurity strongly decreases…

The magnetocaloric effect in alternating magnetic fields has been investigated in Pr1-xAgxMnO3 manganites with x=0.05-0.25. The stepwise reversal of the sign of the magnetocaloric effect has been revealed in a weakly doped sample (x=0.05)…

材料科学 · 物理学 2015-03-17 A. G. Gamzatov , A. M. Aliev , A. B. Batdalov , H. Ahmadvand , H. Salamati , P. Kameli

Polar magnetic states are realized in pseudocubic manganite thin films fabricated on high-index substrates, in which a Jahn-Teller (JT) distortion remains an active variable. Several types of orbital-orders were found to develop large…

强关联电子 · 物理学 2015-06-03 Naoki Ogawa , Yasushi Ogimoto , Yoshiaki Ida , Yusuke Nomura , Ryotaro Arita , Kenjiro Miyano

The epitaxial system Sm/Co(0001) was studied for Sm coverages up to 1 monolayer (ML) on top of ultrathin Co/W(110) epitaxial films. Two ordered phases were found for 1/3 and 1 ML Sm, respectively. The valence state of Sm was determined by…

材料科学 · 物理学 2009-11-11 J. E. Prieto , O. Krupin , S. Gorovikov , K. Doebrich , G. Kaindl , K. Starke

We use resonant and non-resonant X-ray diffraction measurements in combination with first-principles electronic structure calculations and Monte Carlo simulations to study the relationship between crystal structure and multiferroic orders…

The paper investigates the influence of the magnetic field on the behavior of 180-degree domain boundaries in a uniaxial ferromagnetic film with inhomogeneous magnetoelectric interaction. It is shown that, depending on the magnitude and…

材料科学 · 物理学 2023-05-24 Robert Vakhitov , Rostislav Solonetskiy , Alina Nizyamova

We studied the magnetic ordering of thin films and bulk crystals of rutile RuO$_2$ using resonant X-ray scattering across the Ru L$_2$ absorption edge. Combining polarization analysis and azimuthal-angle dependence of the magnetic Bragg…

强关联电子 · 物理学 2019-01-28 Z. H. Zhu , J. Strempfer , R. R. Rao , J. Pelliciari , Y. Choi , T. Kawaguchi , H. You , J. F. Mitchell , Y. Shao-Horn , R. Comin

The magnetic field of vortices in anisotropic superconducting films is considered in the framework of anisotropic London approach. It is found that at distances large relative to the core size, the magnetic field normal to the film surface…

超导电性 · 物理学 2021-11-10 V. G. Kogan , N. Nakagawa , J. R. Kirtley

In the present work we analyze the influence of the charge-ordering on the magnetocaloric effect of Pr$_{1-x}$Ca$_x$MnO$_3$ manganites. The results for the samples with $x<$0.30 present the usual ferromagnetic behavior, peaking at the Curie…

材料科学 · 物理学 2007-05-23 M. S. Reis , V. S. Amaral , J. P. Araujo , P. B. Tavares , A. M. Gomes , I. S. Oliveira

In the perovskite-type Ca$_{1-x}$Ce$_{x}$MnO$_{3}$ (CCMO), one can control the transport and magnetic properties through varying Ce content. In the case of thin films, the properties can also be controlled by epitaxial strain from the…

We report on a strain-induced martensitic transformation, accompanied by a suppression of magnetic order in epitaxial films of chemically disordered FeRh. X-ray diffraction, transmission electron microscopy and electronic structure…

We used resonant elastic x-ray scattering at the Cu $L_3$ and Dy $M_5$ edges to investigate charge order in thin films of underdoped DyBa$_2$Cu$_3$O$_{6+x}$ (DyBCO) epitaxially grown on NdGaO$_3$ (110) substrates. The films show an…

We consider a thin film of $d$-wave altermagnet bent in a stretching-free manner and demonstrate that gradients of the film curvature induce a local magnetization which is approximately tangential to the film. The magnetization amplitude…

In this paper we present normal state magnetoresistivity data of magnesium diboride epitaxial thin films with different levels of disorder, measured at 42K in magnetic fields up to 45 Tesla. Disorder was introduced in a controlled way…