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Spin Polarized Low Energy Electron Microscopy is used as a spin dependent spectroscopic probe to study the spin dependent specular reflection of a polarized electron beam from two different magnetic thin film systems: Fe/W(110) and…

材料科学 · 物理学 2007-05-23 J. Graf , C. Jozwiak , A. K. Schmid , Z. Hussain , A. Lanzara

Angle-resolved photoemission (PE) was used to characterize the spin-density wave (SDW) state in thin films of Cr grown on W(110). The PE data were analysed using results of local spin density approximation layer-Korringa-Kohn-Rostoker…

材料科学 · 物理学 2009-11-10 F. Schiller , D. V. Vyalikh , V. D. P. Servedio , S. L. Molodtsov

We report investigation of ferromagnetic resonance phenomenon in ferromagnetic thin films with essentially non-uniform composition. Epitaxial Pd-Fe thin film with linear distribution of Fe content across the thickness is used as the model…

Novel imaging spin-filter techniques, which are based on low energy electron diffraction, are currently of high scientific interest. To improve the spin-detection efficiency a variety of new materials have been introduced in recent years. A…

计算物理 · 物理学 2015-11-18 Stephan Borek , Jürgen Braun , Hubert Ebert , Ján Minár

Understanding the mechanisms underlying a stable polarization at the surface of ferroelectric thin films is of particular importance both from a fundamental point of view and to achieve control of the surface polarization itself. In this…

We present a systematic first-principles study of the electronic surface states and resonances occuring in thin films of Pd of various thicknesses deposited on a single ferromagnetic monolayer of Fe on top of Ir(111) substrate. This system…

材料科学 · 物理学 2019-07-24 Mohammed Bouhassoune , Imara L. Fernandes , Stefan Blügel , Samir Lounis

Electronic and structural properties of ultrathin MgO layers grown on epitaxial Fe(110) films were investigated at room temperature by means of spin-resolved photoelectron spectroscopy, Auger-electron spectroscopy, and low energy electron…

材料科学 · 物理学 2007-05-23 Yu. S. Dedkov , M. Fonin , U. Rüdiger , G. Güntherodt

CeBi has an intricate magnetic phase diagram whose fully-polarized state has recently been suggested as a Weyl semimetal, though the role of $f$ states in promoting strong interactions has remained elusive. Here we focus on the…

The magnitude of electron spin polarization in topologically protected surface states is an important parameter with respect to spintronics applications. In order to analyze the warped spin texture in Bi$_2$Te$_3$ thin films, we combine…

介观与纳米尺度物理 · 物理学 2012-10-09 A. Herdt , L. Plucinski , G. Bihlmayer , G. Mussler , S. Döring , J. Krumrain , D. Grützmacher , S. Blügel , C. M. Schneider

We study the electronic structure of the Re(0001) surface by means of ab-initio techniques based on the Fully Relativistic (FR) Density Functional Theory (DFT) and the Projector Augmented-Wave (PAW) method. We identify the main surface…

材料科学 · 物理学 2019-07-01 Andrea Urru , Andrea Dal Corso

We investigated the microwave-assisted DC voltages of ferromagnetic resonances and exchangedominated standing spin wave excitations in two different in-plane magnetized permalloy thin films via homodyne detection. The line shapes of…

材料科学 · 物理学 2013-10-24 Ziqian Wang , Xiaofeng Zhu , Xiaoshuang Chen , Wei Lu

In tunneling spectroscopy studies of ferromagnet/superconductor (F/S) junctions, the effects of spin polarization, Fermi wavevector mismatch (FWM) between the F and S regions, and interfacial resistance play a crucial role. We study the low…

超导电性 · 物理学 2009-10-31 Igor Zutic , Oriol T. Valls

Discovering and engineering spin-polarised surface states in the electronic structures of condensed matter systems is a crucial first step in development of spintronic devices, wherein spin-polarised bands crossing the Fermi level can…

Ab initio and model calculations demonstrate that the spin motion of electrons transmitted through ferromagnetic films can be analyzed in detail by means of angle- and spin-resolved core-level photoelectron spectroscopy. The spin motion…

凝聚态物理 · 物理学 2013-05-29 J. Henk , P. Bose , Th. Michael , P. Bruno

Recent advances in antiferromagnetic spin dynamics using rare-earth (RE) and transition-metal (TM) ferrimagnets have attracted much interest for spintronic devices with a high speed and density. In this study, the spin wave properties in…

We consider the details of the near-surface electronic band structure of a prototypical ferromagnet, Fe(001). Using high resolution angle-resolved photoemission spectroscopy we demonstrate openings of the spin-orbit induced electronic band…

We report on the storage and non-resonant parametric recovery of microwave signals carried by a dipolar surface spin-wave pulse in a thin ferrimagnetic film. The information about the intensity of the spectral components of the signal…

材料科学 · 物理学 2009-03-05 S. Schäfer , A. V. Chumak , A. A. Serga , G. A. Melkov , B. Hillebrands

We experimentally investigate spin-polarized transport between a ferromagnetic Ni electrode and a surface of Weyl semimetal, realized in a thick WTe$_2$ single crystal. For highly-transparent Ni-WTe$_2$ planar junctions, we observe…

介观与纳米尺度物理 · 物理学 2019-04-03 A. Kononov , O. O. Shvetsov , A. V. Timonina , N. N. Kolesnikov , E. V. Deviatov

A comprehensive mapping of the spin polarization of the electronic bands in ferroelectric a-GeTe(111) films has been performed using a time-of-flight momentum microscope equipped with an imaging spin filter that enables a simultaneous…

Control of the spin wave dynamics in nanomagnetic elements is very important for the realization of a broad range of novel magnonic devices. Here we study experimentally the spin wave resonance in thick ferromagnetic rings (100 nm) using…

应用物理 · 物理学 2021-12-28 Xue Zhou , Elena Tartakovskaya , Gleb Kakazei , Adekunle Adeyeye
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