Spin polarised quantum-well states in layered magnetic nanostructures of Cu/Co/Cu(100)

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dc.contributor.authorYu, DHen_AU
dc.contributor.authorDonath, Men_AU
dc.date.accessioned2021-09-06T03:07:46Zen_AU
dc.date.available2021-09-06T03:07:46Zen_AU
dc.date.issued2004-02-04en_AU
dc.date.statistics2021-08-23en_AU
dc.description.abstractThe unoccupied electronic structures of bilayer Co/Cu(100) and trilayer Cu/Co/Cu(100) structures have been investigated by spin-resolved inverse photoemission. For the first time, the spin-polarised unoccupied quantum-well states have been observed for both systems. The exchange splitting of the quantum-well states and the bulk-like sp band of Co (100) have been determined. A simple phase accumulation model simulated the electron confinement in the ultra-thin Co(100) film very well. The offset between the Co and Cu X4’ point provides the confinement potential for electrons in the Co film. For the sandwich structure of Cu/Co/Cu(100), in addition to the spin-polarised quantum-well states, surface states and a surface resonant state at the copper/vacuum interface, and bulk-like minority d contributions from the underlying ferromagnetic Co layer have also been identified. The quantum-well states are shown to develop into a surface resonant state as a function of the electron momentum, as evidenced by the loss of the exchange splitting. The quantum-well states in Cu/Co structure are formed by resonance due to high reflectivity, because there is no absolute confinement potential for this structure. The experiment has shown that the spin resolution provides a possible access to the penetration depth of the wave function of the surface state and surface resonant state.en_AU
dc.identifier.citationYu, D. J. & Donath. M. (2004). Spin polarised quantum-well states in layered magnetic nanostructures of Cu/Co/Cu(100). Paper presented to the 28th Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, 3-6 February 2004. Retrieved from: https://www.physics.org.au/wp-content/uploads/cmm/2004/04handbook.pdfen_AU
dc.identifier.conferenceenddate6 February 2004en_AU
dc.identifier.conferencename28th Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, New South Walesen_AU
dc.identifier.conferencestartdate3 February 2004en_AU
dc.identifier.issn1037-1214en_AU
dc.identifier.issnWM9en_AU
dc.identifier.urihttps://www.physics.org.au/wp-content/uploads/cmm/2004/04handbook.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11597en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectSpinen_AU
dc.subjectQuantum wellsen_AU
dc.subjectNanostructuresen_AU
dc.subjectFerromagnetismen_AU
dc.subjectCopperen_AU
dc.subjectCobalten_AU
dc.titleSpin polarised quantum-well states in layered magnetic nanostructures of Cu/Co/Cu(100)en_AU
dc.typeConference Abstracten_AU
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