scholarly journals Spin wave scattering and interface magnetism in superconducting-ferromagnet-superconducting hybrid structures

2009 ◽  
Vol 105 (7) ◽  
pp. 07E326 ◽  
Author(s):  
G. A. Alvarez ◽  
X. L. Wang ◽  
T. Puzzer ◽  
G. Peleckis ◽  
S. X. Dou
Keyword(s):  
Spin Wave ◽  
Wave Scattering ◽  
Hybrid Structures ◽  
Interface Magnetism

Interface Magnetism and Spin Wave Scattering in Ferromagnet-Insulator-Ferromagnet Tunnel Junctions

1998 ◽  
Vol 80 (13) ◽  
pp. 2941-2944 ◽  
Author(s):  
Jagadeesh S. Moodera ◽  
Janusz Nowak ◽  
Rene J. M. van de Veerdonk
Keyword(s):  
Spin Wave ◽  
Wave Scattering ◽  
Tunnel Junctions ◽  
Interface Magnetism

On the Multiple Spin Wave Scattering of Neutrons in Ferromagnets

1956 ◽  
Vol 69 (12) ◽  
pp. 939-940 ◽  
Author(s):  
R J Elliott ◽  
R D Lowde ◽  
W Marshall
Keyword(s):  
Spin Wave ◽  
Wave Scattering

EFFECTS OF PHOTO-EXCITATION AND MAGNON SCATTERING ON FERROMAGNETIC TRANSITION TEMPERATURE OF THE DILUTED MAGNETIC SEMICONDUCTOR (Ga1 - x, Mnx)As

2011 ◽  
Vol 25 (04) ◽  
pp. 273-280 ◽  
Author(s):  
CHERNET AMENTE ◽  
P. SINGH
Keyword(s):  
Transition Temperature ◽  
Spin Wave ◽  
Wave Scattering ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Ferromagnetic Transition ◽  
Photon Irradiation ◽  
Model Hamiltonian ◽  
Diluted Magnetic ◽  
System Properties

Effects of photo-excitation and spin-wave scattering on magnetization of the diluted magnetic semiconductor (DMS) ( Ga , Mn ) As are theoretically studied. Green function formalism is used to find expression for magnetization and ferromagnetic transition temperature TC starting with a model Hamiltonian consisting of magnons, photons and an interaction of magnons with photons. According to our calculation, there is TC in the absence of magnetic impurity, x = 0, indicating that there could be electronically unpaired influential carriers/holes induced by photon irradiation resulting in residual itinerant band magnetization which can be revealed by experiments. Unusual upturn in magnetization near 0 K temperature values for larger magnon–photon coupling constant is also indicated. Moreover, enhancement of magnetization is established with increase in impurity concentration and even further in the presence of photon–magnon coupling which however decreases due to spin-wave scattering. This leads to the conclusion that at lower temperatures photon irradiation and at higher temperatures spin-wave scattering could affect the system properties predominantly.

scholarly journals THE INFLUENCE OF “INJECTED” AND “THERMAL” MAGNONS ON A SPIN WAVE CURRENT AND DRAG EFFECT IN HYBRID STRUCTURES

2018 ◽  
Vol 185 ◽  
pp. 01022
Author(s):  
Igor Lyapilin ◽  
Mikhail Okorokov
Keyword(s):  
Spin Wave ◽  
Metal Structure ◽  
Relaxation Mechanism ◽  
Seebeck Effect ◽  
Hybrid Structures ◽  
Momentum Balance ◽  
Drag Effect ◽  
Balance Equations ◽  
Spin Seebeck Effect ◽  
Magnetic Insulator

The formation of the two: injected and thermally excited, different in energies magnon subsystems and the influence of its interaction with phonons and between on drag effect under spin Seebeck effect conditions in the magnetic insulator part of the metal/ferromagnetic insulator/metal structure is studied. The analysis of the macroscopic momentum balance equations of the systems of interest conducted for different ratios of the drift velocities of the magnon and phonon currents show that the injected magnons relaxation on the thermal ones is possible to be dominant over its relaxation on phonons. This interaction will be the defining in the forming of the temperature dependence of the spin-wave current under spin Seebeck effect conditions, and inelastic part of the magnon-magnon interaction is the dominant spin relaxation mechanism.

scholarly journals INTERFACE MAGNETISM IN FERROMAGNETIC METAL–COMPOUND SEMICONDUCTOR HYBRID STRUCTURES

SPIN ◽  
2011 ◽  
Vol 01 (01) ◽  
pp. 45-69 ◽  
Author(s):  
AIDAN T. HINDMARCH
Keyword(s):  
Significant Proportion ◽  
Dissimilar Materials ◽  
Free Energy Density ◽  
Compound Semiconductor ◽  
Ferromagnetic Metal ◽  
Hybrid Structures ◽  
Intimate Contact ◽  
Interface Magnetism ◽  
Wide Range ◽  
Nanoscale Thin Film

Interfaces between dissimilar materials present a wide range of fascinating physical phenomena. When a nanoscale thin-film of a ferromagnetic metal is deposited in intimate contact with a compound semiconductor, the properties of the interface exhibit a wealth of novel behavior, having immense potential for technological application, and being of great interest from the perspective of fundamental physics. This article presents a review of recent advances in the field of interface magnetism in (001)-oriented ferromagnetic metal/III–V compound semiconductor hybrid structures. Until relatively recently, the majority of research in this area continued to concentrate almost exclusively on the prototypical epitaxial Fe / GaAs (001) system: now, a significant proportion of work has branched out from this theme, including ferromagnetic metal alloys, and other III–V compound semiconductors. After a general overview of the topic, and a review of the more recent literature, we discuss recent results where advances have been made in our understanding of the physics underpinning magnetic anisotropy in these systems: tailoring the terms contributing to the angular-dependent free-energy density by employing novel fabrication methods and ferromagnetic metal electrodes.

Microstructure and spin wave scattering in polycrystalline yttrium iron garnet

1984 ◽  
Vol 43 (3) ◽  
pp. 256-260 ◽  
Author(s):  
V. Saraswati ◽  
M.S. Multani ◽  
V.R. Palkar ◽  
R. Vijayaraghavan ◽  
A. Gurjar
Keyword(s):  
Spin Wave ◽  
Wave Scattering ◽  
Yttrium Iron Garnet ◽  
Yttrium Iron ◽  
Iron Garnet

Spin‐Wave Scattering of Polarized Neutrons from Nickel and Cobalt

1965 ◽  
Vol 36 (3) ◽  
pp. 1076-1077 ◽  
Author(s):  
T. Riste ◽  
G. Shirane ◽  
H. A. Alperin ◽  
S. J. Pickart
Keyword(s):  
Spin Wave ◽  
Wave Scattering ◽  
Polarized Neutrons

Spin Wave-Spin Wave Scattering in a Heisenberg Ferromagnet

1964 ◽  
Vol 12 (19) ◽  
pp. 540-541 ◽  
Author(s):  
R. G. Boyd ◽  
Joseph Callaway
Keyword(s):  
Spin Wave ◽  
Wave Scattering ◽  
Heisenberg Ferromagnet
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