CINECA IRIS Institutional Research Information System
IRIS è la soluzione IT che facilita la raccolta e la gestione dei dati relativi alle attività e ai prodotti della ricerca. Fornisce a ricercatori, amministratori e valutatori gli strumenti per monitorare i risultati della ricerca, aumentarne la visibilità e allocare in modo efficace le risorse disponibili.
EnglishA study of spin localized excitations in ferromagnetic tangentially magnetized dots of cylindrical shape and of nanometric size is presented. A recently formulated variational theory permits us to study the most representive localized spin modes of the spectrum. One of these, the fundamental mode, is mainly localized in the central part of the dot endfaces and represents the analogous in nonellipsoidal samples of the Kittel uniform mode in ellipsoids. We also investigate the dynamical properties of spin modes localized in the lateral part of the dot endfaces along the direction of the applied magnetic field studying the dependence of their localization from the variational parameter and from the applied magnetic field. Finally, a comparison of the calculated frequencies of some of these localized modes with available experimental data is performed.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
| Data di pubblicazione: | 2007 | |
| Titolo: | Localized spin modes in ferromagnetic cylindrical dots with in-plane magnetization | |
| Autori: | R. ZIVIERI; G. SANTORO; A. FRANCHINI | |
| Rivista: | JOURNAL OF PHYSICS. CONDENSED MATTER | |
| Parole Chiave: | Localized spin modes; variational theory; spin mode spectra | |
| Abstract: | A study of spin localized excitations in ferromagnetic tangentially magnetized dots of cylindrical shape and of nanometric size is presented. A recently formulated variational theory permits us to study the most representive localized spin modes of the spectrum. One of these, the fundamental mode, is mainly localized in the central part of the dot endfaces and represents the analogous in nonellipsoidal samples of the Kittel uniform mode in ellipsoids. We also investigate the dynamical properties of spin modes localized in the lateral part of the dot endfaces along the direction of the applied magnetic field studying the dependence of their localization from the variational parameter and from the applied magnetic field. Finally, a comparison of the calculated frequencies of some of these localized modes with available experimental data is performed. | |
| Digital Object Identifier (DOI): | 10.1088/0953-8984/19/30/305012 | |
| Handle: | http://hdl.handle.net/11392/521361 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista |
File in questo prodotto:
http://hdl.handle.net/11392/521361
Copyright © 2022