Phonon Assisted Multimagnon Optical Absorption and Long Lived Two-Magnon States in Undoped Lamellar Copper Oxides

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dc.creatorLorenzana, J.
dc.creatorSawatzky, G. A.
dc.date1995-01-19
dc.date.accessioned2026-07-07T09:44:35Z
dc.date.available2026-07-07T09:44:35Z
dc.descriptionWe calculate the effective charge for multimagnon infrared (IR) absorption assisted by phonons in the parent insulating compounds of cuprate superconductors and the spectra for two-magnon absorption using interacting spin-wave theory. Recent measured bands in the mid IR [Perkins et al. Phys. Rev. Lett. {\bf 71} 1621 (1993)] are interpreted as involving one phonon plus a two-magnon virtual bound state, and one phonon plus higher multimagnon absorption processes. The virtual bound state consists of a narrow resonance occurring when the magnon pair has total momentum close to $(π,0)$.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/supr-con/9501001
dc.identifierhttp://arxiv.org/abs/supr-con/9501001
dc.identifierPhys. Rev. Lett., 74,1867(1995)
dc.identifierdoi:10.1103/PhysRevLett.74.1867
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162928
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titlePhonon Assisted Multimagnon Optical Absorption and Long Lived Two-Magnon States in Undoped Lamellar Copper Oxides
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