Journal ArticleDOI
Magnetic Friedel Oscillation at the Fe(001) Surface: Direct Observation by Atomic-Layer-Resolved Synchrotron Radiation ^{57}Fe Mössbauer Spectroscopy.
Takaya Mitsui,S. Sakai,S. Li,T. Ueno,Tetsu Watanuki,Yoji Kobayashi,Ryo Masuda,Makoto Seto,Hisazumi Akai +8 more
TLDR
These results provide the first experimental evidence for the magnetic Friedel oscillations, which penetrate several layers from the Fe(001) surface.Abstract:
The surface magnetism of Fe(001) was studied in an atomic layer-by-layer fashion by using the in situ iron-57 probe layer method with a synchrotron Mossbauer source. The observed internal hyperfine field H_{int} exhibits a marked decrease at the surface and an oscillatory behavior with increasing depth in the individual upper four layers below the surface. The calculated layer-depth dependencies of the effective hyperfine field |H_{eff}|, isomer shift δ, and quadrupole shift 2ϵ agree well with the observed experimental parameters. These results provide the first experimental evidence for the magnetic Friedel oscillations, which penetrate several layers from the Fe(001) surface.read more
Citations
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Perpendicular magnetic anisotropy at the Fe/Au(111) interface studied by Mössbauer, x-ray absorption, and photoemission spectroscopies
Jun Okabayashi,Songtian Li,Seiji Sakai,Yasuhiro Kobayashi,Takaya Mitsui,Kiyohisa Tanaka,Yoshio Miura,Seiji Mitani,Seiji Mitani +8 more
TL;DR: In this paper, the origin of the interfacial perpendicular magnetic anisotropy induced in the ultrathin Fe layer on the Au(111) surface was examined using synchrotron-radiation-based Mossbauer spectroscopy (MS), x-ray magnetic circular dichroism (XMCD), and angle-resolved photoemission spectrography (ARPES).
Journal ArticleDOI
Extrinsic magnetoelectric effect at the BaTiO3/Ni interface
TL;DR: In this article , the authors theoretically investigated the interfacial magnetoelectric effect in the BaTiO3/Ni heterostructure and found that the dependence of the magnetic moment of Ni on the polarization direction, primarily stems from the flow of the screening charge from Ni into Ba TiO3 with a minor contribution coming from interfacial chemical bonding.
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Electron Correlation Enhances Orbital Polarization at a Ferromagnetic Metal/Insulator Interface: Depth-Resolved X-ray Magnetic Circular Dichroism and First-Principles Study
TL;DR: In this paper , the spin and orbital magnetic moments of Fe are enhanced at the Fe/MgO interface, which is much more significant than that predicted by the standard density functional theory.
Journal ArticleDOI
Electric-field driven stability control of skyrmions in an ultrathin transition-metal film
TL;DR: In this article , the stability of individual magnetic skyrmions in an ultrathin transition-metal film can be controlled via external electric fields, and the changes of all interactions with electric field, i.e., the pair-wise exchange, the Dzyaloshinskii-Moriya interaction, the magnetocrystalline anisotropy energy, and higher-order exchange interactions are considered.
Posted Content
Electric field driven stability control of skyrmions in an ultrathin transition-metal film
Souvik Paul,Stefan Heinze +1 more
TL;DR: In this paper, the stability of individual magnetic skyrmions in an ultrathin transition-metal film can be controlled via the external electric fields, and the authors find changes from 8 to 30$\%$ of the Heisenberg exchange, the Dzyaloshinskii-Moriya interaction, the magnetocrystalline anisotropy energy, and higher order exchange interactions.
References
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Journal ArticleDOI
Voigt-based methods for arbitrary-shape static hyperfine parameter distributions in Mössbauer spectroscopy
Denis G. Rancourt,J.Y. Ping +1 more
TL;DR: In this article, the authors introduce a powerful approach for obtaining arbitrary-shape static hyperfine parameter distributions from thickness corrected Mossbauer spectra. The distributions are taken as sums of Gaussian components and the corresponding spectra are shown analytically to be sums of Voigt lines.
Journal ArticleDOI
Surface magnetism of Fe(001)
TL;DR: In this article, all-electron self-consistent semirelativistic full-potential linearized augmented-plane-wave local-density and local-spin-density studies are reported for a seven-layer Fe(001) thin film.
Journal ArticleDOI
Determination of the nuclear quadrupole moment of 57Fe.
TL;DR: In this article, the nuclear quadrupole moment of the most important Mossbauer nucleus was determined by comparing experimental quadrupoles splittings with calculated electric field gradients (EFG) for a large number of different Fe compounds.
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In situ Mössbauer analysis of hyperfine interactions near Fe(110) surfaces and interfaces.
Józef Korecki,U. Gradmann +1 more
TL;DR: Mesures des parametres d'interaction hyperfine au voisinage de surfaces de Fe(110) propres et recouvertes de Ag are revealed.
Journal ArticleDOI
Surface states, surface magnetization, and electron spin polarization: Fe(001)
Chenjie Wang,Arthur J Freeman +1 more
TL;DR: The first ab initio self-consistent spin-polarized energy-band study of a ferromagnetic transition-metal film [Ni(001) was performed by as discussed by the authors.