- PDF Inelastic Light Scattering of Semiconductor Nanostructures - GBV.
- Magnetic skyrmion shape manipulation by perpendicular magnetic.
- Control and local measurement of the spin chemical potential... - Science.
- Current-confined effect of magnetic nano-current-channel (NCC) for.
- Collective spin excitations in laterally confined magnetic.
- Confined magnons... | ORNL.
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- Nano Letters | Vol 16, No 1 - ACS Publications.
- Keck Program in Quantum Materials.
- Chirality and intrinsic dissipation of spin modes in two-dimensional.
- Magnetic System - an overview | ScienceDirect Topics.
- Spin Dynamics in Confined Magnetic Structures I | Request PDF.
- MASTER'S IN NANOSCIENCE: Education.
- Spin-Wave Channeling in Magnetization-Graded Nanostrips.
PDF Inelastic Light Scattering of Semiconductor Nanostructures - GBV.
Magnetic nanostructures are being developed for use in many aspects of our daily life, spanning areas such as data storage, sensing and biomedicine. Whereas patterned nanomagnets are traditionally.
Magnetic skyrmion shape manipulation by perpendicular magnetic.
In the quantum formalism, the collective modes of spin excitations in a magnetic solid are referred to as spin waves and their representative quasi-particles are called magnons. The word magnon is chosen in analogy to the quantized lattice vibrations, named phonons. Similar to phonons, plasmons, excitons, magnons are also bosons. This research has been motivated by promising technological applications in the area of magnetic data storage, as well as by pure scientific quest for ultra-fast spin dynamics in nanostructures. The present paradigm of magnetic data storage is approaching its fundamental limits for areal storage density, as well as for speed in data processing.
Control and local measurement of the spin chemical potential... - Science.
Square lattices of isolated electron disks of diameters 0.22 m were obtained by laterally patterning n-type modulation-doped Si/SiGe heterojunctions.... Abstract. Magnetic structures are known to possess magnon excitations confined to their surfaces and interfaces, but these spatially localized modes are often not resolved in spectroscopy experiments. We develop a theory to calculate the confined magnon spectra and its associated spin scattering function, which is the physical observable in.
Current-confined effect of magnetic nano-current-channel (NCC) for.
JOURNAL OF APPLIED PHYSICS VOLUME 93, NUMBER 10 15 MAY 2003 Thermal spin excitations in epitaxial Fe nanostructures on GaAs001... W. Kipferl,a) M. Dumm, M. Rahm, and G. Bayreuther Institut fur Experimentelle und Angewandte Physik, Universitat Regensburg, 93040 Regensburg, Germany Presented on 14 November 2002 Thermal spin excitations in confined ferromagnetic structures become.
Collective spin excitations in laterally confined magnetic.
The first and the best free dating site for Expats in Germany. Find and meet other expats in Germany. Register for free now. The proceedings included a special lecture by Prof C N Yang, "Pseudopotential Method in Cold Atom Research", and 75 refereed papers covering the wide range of quantum physics: cold atoms and molecules; spin-Hall effect and anomalous Hall effect; magnetic domain wall dynamics and spin-related phenomena; Dirac fermions in condensed matter. Spin-polarised DFT modeling of electronic, magnetic, thermal and optical properties of silicene doped with transition metals Physica E: Low-dimensional Systems and Nanostructures; Study of BC14N-bilayer graphene: Effects of atomic spacing and interatomic interaction between B and N atoms Superlattices and Microstructures.
Confined magnons... | ORNL.
Spin excitations Py/Cu/Py rectangular dots. Multilayered magnetic nanostructures, such as spin valve structures and nanopillars, have attracted a lot of interest in recent years, thanks to their potential exploitation in a number of different devices, in the field of storage media, random-access memories, and spin-torque oscillators (STOs). Linear and nonlinear dynamics of magnetic excitations in magnetic films, multilayers, and finite-size samples: spin waves, solitons, parametric instabilities. Applications of linear and nonlinear spin waves in microwave signal processing. Current Research Interests: Theory of bright and dark spin wave envelope solitons in magnetic films. This research project in theoretical condensed-matter physics aims to study the collective charge and spin excitations of itinerant quasi-two-dimensional electronic systems such as doped semiconductor nanostructures and carbon-based materials, in the presence of impurities and spin-orbit coupling.
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We have focused on collective spin excitations of the 2DEL, both of a longitudinal (spin conserving) and transverse (spin-flip) nature. The presence of SOC (Rashba and Dresselhaus), in-plane magnetic fields, and magnetic impurities at first seems to complicate matters enormously; indeed, the single-particle properties exhibit increasing degrees. The study of collective spin excitations in magnetically ordered materials (so-called spin waves and the associated quasi-particles---magnons) has a successful history of more than 60 years.
Nano Letters | Vol 16, No 1 - ACS Publications.
Being eigen-excitations of a magnetic medium (Box 1), coherent SWs can be excited in many ferrimagnetic and ferromagnetic materials, ranging from bulk-like magneto-dielectrics to ultra-thin metal. A general theory of collective spin-wave excitations in a two-dimensional array of magnetic nanodots coupled by magnetodipolar interaction is developed. The theory allows one to analytically. Magnonic crystals are artificially periodic magnetic systems where the artificial periodicity modifies the energy spectrum of collective excitations. Frequency dispersion as a function of the Bloch wave vector strictly depends on the periodicity constant and on the interplay between the dipolar and exchange energy stored in collective modes.
Keck Program in Quantum Materials.
Magnetic vortex structures are of high technological relevance due to their possible application in magnetic memory. Moreover, investigating magnetization reversal via vortex formation is an important topic in basic research. Typically, such vortices are only investigated in homogeneous magnetic materials of diverse shapes. Here, we report for the first time on micromagnetic simulation of. There are varied spin states in dilute magnetic semiconductors, and carriers are not the only elementary excitations that carry the spin. This article reports a study of spin interactions in excitons of ZnSe:NiI(II) nanostructures. High-quality ZnSe:NiI(II) nanobelts (NBs) prepared by chemical vapor. P:15 Collective excitations of magnetic bubble domains in an antidot lattice Angus Laurenson, University of Exeter, UK... P:23 Magnetic imaging of phase domain development in laterally confined FeRh Rowan Temple, University of Leeds, UK... P:82 Propagating spiral spin waves in magnetic nanostructures David Osuna Ruiz, University of Exeter, UK.
Chirality and intrinsic dissipation of spin modes in two-dimensional.
Magnetic Nanostructures: Spin Dynamics and Spin Transport. Spin excitations of magnetic thin films are the founding element for magnetic devices in general. While spin dynamics have been extensively studied in bulk materials, the behaviour in mesoscopic. Jun 25, 2007 We review ground-state properties and collective excitations of semiconductor quantum dots in a magnetic field obtained from current-spin.
Magnetic System - an overview | ScienceDirect Topics.
Similarly to photons in photonic crystals [], the spectrum of spin excitations in materials with periodically modulated properties shows bands of allowed magnonic states, alternating with forbidden band gaps [].This constitutes a new class of artificial crystals, now known as magnonic crystals (MCs), in which collective spin excitations rather than light are used to transmit and process. PhD Position - Study of spin and charge excitations in artificially created nanostructures using an ultra-low temperature SPM in high magnetic fields, with Julich Research Centre (FZJ). Apply Today.
Spin Dynamics in Confined Magnetic Structures I | Request PDF.
Within a decade, the field of magnetic skyrmionics has developed from a niche prediction to a huge and active research field. Not only do magnetic skyrmionsmagnetic whirls with a unique topologyreveal fundamentally new physics, but they have also risen to prominence as up-and-coming candidates for next-generation high-density efficient information encoding.
MASTER'S IN NANOSCIENCE: Education.
Dissertations & Theses from 2021. Pleasant, Virginia F (2021) There's More Than Corn in Indiana: Smallholder and Alternative Farmers as a Locus of Resilience. Viswanathan, Vibha (2021) Neurophysiological Mechanisms of Speech Intelligibility Under Masking and Distortion.
Spin-Wave Channeling in Magnetization-Graded Nanostrips.
14:15 Magnetic oxides for spin injection: recent outcomes from the molecular spintronics P Graziosi, CNR-ISMN, Italy... P:15 Collective excitations of magnetic bubble domains in an antidot lattice Angus Laurenson, University of Exeter, UK... P:23 Magnetic imaging of phase domain development in laterally confined FeRh Rowan Temple, University. Spin waves are collective magnetic excitations in ferro-, ferri-, and antiferromagnetic materials and an active research area in the field of magnetism. Recently, it was demonstrated that their quanta, magnons, show specific fundamentals of bosonic behavior such as Bose-Einstein condensation and superfluidity. 1,2 1. S. O. Spin wave modes in a nanomagnet govern its dynamical behavior. Magnetization reversal in a nanomagnet - a phenomenon that undergirds the operation of virtually all magnetic switching devices.
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