kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Magnetic droplet solitons in orthogonal spin valves
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF. University of Gothenburg, Sweden.ORCID iD: 0000-0002-9970-0060
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0003-1271-1814
Show others and affiliations
2015 (English)In: Low temperature physics (Woodbury, N.Y., Print), ISSN 1063-777X, E-ISSN 1090-6517, Vol. 41, no 10, p. 833-837Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

We review the recent experimental advancements in the realization and understanding of magnetic droplet solitons generated by spin transfer torque in orthogonal nanocontact based spin torque nanooscillators (STNOs) fabricated on extended spin valves and spin valve nanowires. The magnetic droplets are detected and studied using the STNO microwave signal and its resistance, the latter both quasistatically and time-resolved. The droplet nucleation current is found to have a minimum at intermediate magnetic field strengths and the nature of the nucleation changes gradually from a single sharp step well above this field, mode-hopping around the minimum, and continuous at low fields. The mode-hopping and continuous transitions are ascribed to droplet drift instability and re-nucleation at different time scales, which is corroborated by time-resolved measurements. We argue that the use of tilted anisotropy fixed layers could reduce the nucleation current further, move the nucleation current minimum to lower fields, and potentially remove the need for an applied magnetic field altogether. Finally, evidence of an edge mode droplet in a nanowire is presented.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2015. Vol. 41, no 10, p. 833-837
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-181140DOI: 10.1063/1.4932358ISI: 000364408900012Scopus ID: 2-s2.0-84946554606OAI: oai:DiVA.org:kth-181140DiVA, id: diva2:900993
Note

QC 20160205

Not duplicate with ID: diva2:900993

Available from: 2016-02-05 Created: 2016-01-29 Last updated: 2024-03-15Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Chung, SunjaeEklund, AndersSani, Redjai SohrabNguyen, T. N. AnhÅkerman, Johan

Search in DiVA

By author/editor
Chung, SunjaeEklund, AndersSani, Redjai SohrabNguyen, T. N. AnhÅkerman, Johan
By organisation
Material Physics, MFIntegrated Devices and CircuitsMaterials- and Nano PhysicsMaterials Science and Engineering
In the same journal
Low temperature physics (Woodbury, N.Y., Print)
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 385 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf