Quantum mechanics of spin transfer in coupled electron-spin chains

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dc.creatorKim, Wonkee
dc.creatorCovaci, L.
dc.creatorDogan, F.
dc.creatorMarsiglio, F.
dc.date2007-03-02
dc.date.accessioned2026-07-07T09:32:59Z
dc.date.available2026-07-07T09:32:59Z
dc.descriptionThe manner in which spin-polarized electrons interact with a magnetized thin film is currently described by a semi-classical approach. This in turn provides our present understanding of the spin transfer, or spin torque phenomenon. However, spin is an intrinsically quantum mechanical quantity. Here, we make the first strides towards a fully quantum mechanical description of spin transfer through spin currents interacting with a Heisenberg-coupled spin chain. Because of quantum entanglement, this requires a formalism based on the density matrix approach. Our description illustrates how individual spins in the chain time-evolve as a result of spin transfer.
dc.description4 pages, 3 (colour) figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0703068
dc.identifierhttp://arxiv.org/abs/cond-mat/0703068
dc.identifierEurophysics Letters 79. 67004 (2007)
dc.identifierdoi:10.1209/0295-5075/79/67004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158981
dc.subjectMesoscale and Nanoscale Physics
dc.titleQuantum mechanics of spin transfer in coupled electron-spin chains
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