dc.contributor.author | COEY, JOHN | en |
dc.date.accessioned | 2011-09-30T15:48:24Z | |
dc.date.available | 2011-09-30T15:48:24Z | |
dc.date.issued | 2011 | en |
dc.date.submitted | 2011 | en |
dc.identifier.citation | Diao, Z, Nowak, ER, Haughey, KM, Coey, JMD, Nanoscale dissipation and magnetoresistive 1/f noise in spin valves, Physical Review B, 84, 9, 2011, 094412- | en |
dc.identifier.other | Y | en |
dc.description | PUBLISHED | en |
dc.description.abstract | Spatial correlations of 1/f noise in yoke-shaped, giant magnetoresistance spin valve sensors are reported. An upper bound of 135 nm, corresponding to a magnetic volume of <10(5) nm(3), is determined for the lateral size of the magnetic fluctuators responsible for the magnetoresistive 1/f noise in regions where the resistance susceptibility is large. The normalized noise power is found to scale inversely with the separation between voltage taps along the arm of the yoke, also consistent with a local noise mechanism. The magnetoresistive 1/f noise is associated with quasiequilibrium fluctuations in the micromagnetic structure having a length scale set by the disorder formed during the deposition and processing of the materials stack. | en |
dc.description.sponsorship | This work was supported by Science Foundation Ireland as part of the Magnetic Nanostructures and Spin Electronics (MANSE) project. Some support was also provided by Enterprise Ireland as part of the "Spincurrents" Fundamentals of Nano Electronics (FoNE) network. E.R.N. and K.M.H. also acknowledge US Department of Energy support under Award No. DE-FG02-07ER46374 for graduate student funding and measurements conducted at Delaware. The authors are grateful to B. S. Chun, G. Feng, and J. F. Feng for providing the SV stacks; to T. Lutz for help with sample patterning; and to T. Flanagan for assistance with some noise measurements | en |
dc.format.extent | 094412 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Physical Review B | en |
dc.relation.ispartofseries | 84 | en |
dc.relation.ispartofseries | 9 | en |
dc.rights | Y | en |
dc.subject | Condensed matter physics | en |
dc.subject | MAGNETIZATION RIPPLE | en |
dc.subject | THIN-FILMS | en |
dc.subject | SENSORS | en |
dc.subject | FLUCTUATIONS | en |
dc.subject | SPINTRONICS | en |
dc.title | Nanoscale dissipation and magnetoresistive 1/f noise in spin valves | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/jcoey | en |
dc.identifier.rssinternalid | 75163 | en |
dc.identifier.doi | http://dx.doi.org/10.1103/PhysRevB.84.094412 | en |
dc.subject.TCDTheme | Nanoscience & Materials | en |
dc.identifier.rssuri | http://dx.doi.org/10.1103/PhysRevB.84.094412 | en |
dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
dc.identifier.uri | http://hdl.handle.net/2262/59735 | |