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Related papers: Nonlinear Magneto-Optics of Fe Monolayers from fir…

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The magneto-optical properties of Ga$_{1-x}$Mn$_{x}$As including their most common defects were investigated with precise first--principles density-functional FLAPW calculations in order to: {\em i}) elucidate the origin of the features in…

Materials Science · Physics 2009-11-11 S. Picozzi , A. Continenza , M. Kim , A. J. Freeman

The optical Kerr effect of material with negative refraction is estimated for the first time. This is done via three-dimensional finite-difference time-domain (FDTD) simulations of disordered bidisperse metasurfaces consisting of high index…

Optics · Physics 2020-03-19 Andrey V. Panov

Magnetic bilayers with different magnetic anisotropy directions are interesting for spintronic appli- cations as they offer the possibility to engineer tilted remnant magnetization states. We investigate the ferromagnetic resonance (FMR)…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Jun-Wen Xu , Volker Sluka , Bartek Kardasz , Mustafa Pinarbasi , Andrew D. Kent

We present a method for a precise determination of magnetic anisotropy and anisotropy of quadratic magneto-optical response of thin films of ferromagnetic and ferrimagnetic materials. The method is based on measurements of a magneto-optical…

This study investigates magnetic domains in Fe/Si and Fe/Si + B4C multilayers using spin flip off-specular polarized neutron reflectometry. The results show that Fe/Si multilayers exhibit pronounced spin flip off-specular scattering…

A description of non-collinear magnetism in the framework of spin-density functional theory is presented for the exact exchange energy functional which depends explicitly on two-component spinor orbitals. The equations for the effective…

The magnetic state and magnetic coupling of individual atoms in nanoscale structures relies on a delicate balance between different interactions with the atomic-scale surrounding. Using scanning tunneling microscopy, we resolve the…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 T. R. Umbach , M. Bernien , C. F. Hermanns , A. Krüger , V. Sessi , I. Fernandez-Torrente , P. Stoll , J. I. Pascual , K. J. Franke , W. Kuch

A study of the multilayer system MgO/CoFeB(1.1nm)/Ta($t$)/CoFeB(0.8nm)/MgO is presented, where the two CoFeB layers are separated by a Ta interlayer of varying thickness $t$. The magnetization properties deduced from complementary…

We predict a non-thermal magneto-optical effect for magnetic insulators subject to intense light carrying orbital angular momentum (OAM). Using a classical approach to second harmonic generation in non-linear media with specific symmetry…

Mesoscale and Nanoscale Physics · Physics 2014-10-17 Thomas Bose , Jamal Berakdar

The magnetocrystalline anisotropy energy E(anis) of free-standing monolayers and thin films of Fe and Ni is determined using two different semi-empirical schemes. Within a tight-binding calculation for the 3d bands alone, we analyze in…

Condensed Matter · Physics 2009-10-28 A. Lessard , T. H. Moos , W. Huebner

Some physical properties of bcc Fe/V and Fe/Co (001) superlattices are reviewed. The dependence of the magnetic anisotropy on the in-plane strain introduced by the lattice mismatch between Fe and V is measured and compared to a theoretical…

Materials Science · Physics 2009-11-07 P. Nordblad , A. Broddefalk , R. Mathieu , P. Blomqvist , O. Eriksson , R. Wäppling

We have investigated random submonolayer films of 3d transition metals on W(001). The tight-binding linear muffin-tin orbital method combined with the coherent potential approximation was employed to calculate the electronic structure of…

Materials Science · Physics 2007-06-12 M. Ondracek , J. Kudrnovsky , I. Turek , F. Maca

Recent work investigating resonant nonlinear magneto-optical rotation (NMOR) related to long-lived ($\tau\ts{rel} \sim 1 {\rm s}$) ground-state atomic coherences has demonstrated potential magnetometric sensitivities exceeding $10^{-11}…

We explore the spatial features of various orders of Fraunhofer diffraction patterns in a four-level N-type atomic system. The system interacts with a weak probe light, a standing wave (SW) coupling field in the x-direction, and a…

Quantum Physics · Physics 2024-01-12 Seyyed Hossein Asadpour , Teodora Kirova , Hamid R. Hamedi , Reza Asgari

We theoretically and experimentally investigate the mutual collapse dynamics of two spatially separated optical beams in a Kerr medium. Depending on the initial power, beam separation, and the relative phase, we observe repulsion or…

We present a full formalism for the calculation of the linear and second-order optical response for semiconductors and insulators. The expressions for the optical susceptibilities are derived within perturbation theory. As a starting point…

Materials Science · Physics 2009-11-10 S. Sharma , C. Ambrosch-Draxl

The recent experimental realization of a high quality WSe$% _{2} $ leads to the possibility of magneto-optical measurements and the manipulation of the spin and valley degrees of freedom. We study the influence of the very strong spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2016-07-26 M. Tahir , P. Vasilopoulos

Strain-mediated magnetoelectric (ME) heterostructures enable electric-field control of magnetism and are promising for ultra-low-power spintronic logic. Yet achieving spatially selective, low-voltage control in thin films and quantifying ME…

Motivated by a recent experimental observation of a complex magnetic structure [Takada et al. 2013 J. Magn. Magn. Mater. 329 95] we present a theoretical study of the magnetic structure of an Fe monolayer deposited on Rh(001). We use a…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 A. Deák , K. Palotás , L. Szunyogh , I. A. Szabó

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…

Materials Science · Physics 2007-05-23 J. Graf , C. Jozwiak , A. K. Schmid , Z. Hussain , A. Lanzara