Change search
ReferencesLink to record
Permanent link

Direct link
Hysteretic Synchronization in Spin-Torque Nanocontact Oscillators: A Micromagnetic Study
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF.
Show others and affiliations
2014 (English)In: IEEE transactions on nanotechnology, ISSN 1536-125X, E-ISSN 1941-0085, Vol. 13, no 3, 532-536 p.Article in journal (Refereed) Published
Abstract [en]

Several experiments report the presence of finite jumps in the properties of spin-torque oscillators at room temperature, such as oscillation frequency and power as functions of current or field. On the basis of micromagnetic simulations, this paper links those experimental discontinuities to the changes in the curve slope numerically observed in the absence of thermal effects. Our numerical results show the key ingredient triggering this behavior is the presence of abrupt changes in the oscillation axis of the magnetization precession. We also predict that by fixing the bias point of the oscillator near those critical regions, it is possible to observe hysteretic synchronization. This result should be a key point in the design of nanoscale on-chip phase-locked loop receivers with improved sensitivity.

Place, publisher, year, edition, pages
2014. Vol. 13, no 3, 532-536 p.
Keyword [en]
Hysteretic synchronization, micromagnetism, nanooscillators, spin-transfer torque
National Category
Nano Technology
URN: urn:nbn:se:kth:diva-147050DOI: 10.1109/TNANO.2014.2308474ISI: 000336091000020ScopusID: 2-s2.0-84900847284OAI: diva2:728323

QC 20140624

Available from: 2014-06-24 Created: 2014-06-23 Last updated: 2014-06-24Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Åkerman, Johan
By organisation
Material Physics, MF
In the same journal
IEEE transactions on nanotechnology
Nano Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 14 hits
ReferencesLink to record
Permanent link

Direct link