Magnetic bit stability: Competition between domain-wall and monodomain switching

Silas Hoffman*, Yaroslav Tserkovnyak, Pedram Khalili Amiri, Kang L. Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We numerically study the thermal stability properties of computer memory storage realized by a magnetic ellipse. In the case of practical magnetic random-access memory devices, the bit can form a spin texture during switching events. To study the energy barrier for thermally induced switching, we develop a variational procedure to force the bit to traverse a smooth path through configuration space between the points of stability. We identify textured configurations realizing domain-wall propagation, which may have an energy barrier less than that of the corresponding monodomain model. We contrast the emergence of such micromagnetic effects in thermal versus field-induced switching.

Original languageEnglish (US)
Article number212406
JournalApplied Physics Letters
Issue number21
StatePublished - May 21 2012

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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