By the same authors

From the same journal

From the same journal

Two-magnon bound state causes ultrafast thermally induced magnetisation switching

Research output: Contribution to journalArticle

Published copy (DOI)

Author(s)

Department/unit(s)

Publication details

JournalScientific Reports
DatePublished - 20 Nov 2013
Volume3
Original languageEnglish

Abstract

There has been much interest recently in the discovery of thermally induced magnetisation switching using femtosecond laser excitation, where a ferrimagnetic system can be switched deterministically without an applied magnetic field. Experimental results suggest that the reversal occurs due to intrinsic material properties, but so far the microscopic mechanism responsible for reversal has not been identified. Using computational and analytic methods we show that the switching is caused by the excitation of two-magnon bound states, the properties of which are dependent on material factors. This discovery allows us to accurately predict the onset of switching and the identification of this mechanism will allow new classes of materials to be identified or designed for memory devices in the THz regime.

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations