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rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
2006-5-22
pubmed:abstractText
We present measurements of mesoscopic resistance fluctuations in cobalt nanoparticles and study how the fluctuations with bias voltage, bias fingerprints, respond to magnetization-reversal processes. Bias fingerprints rearrange when domains are nucleated or annihilated. The domain wall causes an electron wave function-phase shift of approximately equal to 5pi. The phase shift is not caused by the Aharonov-Bohm effect; we explain how it arises from the mistracking effect, where electron spins lag in orientation with respect to the moments inside the domain wall. Dephasing time in Co at 0.03 K is short, tau phi approximately 1 ps, which we attribute to the strong magnetocrystalline anisotropy.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Apr
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
14
pubmed:volume
96
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
146803
pubmed:year
2006
pubmed:articleTitle
Mesoscopic resistance fluctuations in cobalt nanoparticles.
pubmed:affiliation
Georgia Institute of Technology, Atlanta, GA 30332, USA.
pubmed:publicationType
Journal Article