Direct Observation of Magnon Fractionalization in the Quantum Spin Ladder

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dc.creatorThielemann, B.
dc.creatorRüegg, Ch.
dc.creatorRønnow, H. M.
dc.creatorLäuchli, A. M.
dc.creatorCaux, J. -S.
dc.creatorNormand, B.
dc.creatorBiner, D.
dc.creatorKrämer, K. W.
dc.creatorGüdel, H. -U.
dc.creatorStahn, J.
dc.creatorHabicht, K.
dc.creatorKiefer, K.
dc.creatorBoehm, M.
dc.creatorMcMorrow, D. F.
dc.creatorMesot, J.
dc.date2008-12-19
dc.date.accessioned2026-07-07T12:55:55Z
dc.date.available2026-07-07T12:55:55Z
dc.descriptionWe measure by inelastic neutron scattering the spin excitation spectra as a function of applied magnetic field in the quantum spin-ladder material (C5H12N)2CuBr4. Discrete magnon modes at low fields in the quantum disordered phase and at high fields in the saturated phase contrast sharply with a spinon continuum at intermediate fields characteristic of the Luttinger-liquid phase. By tuning the magnetic field, we drive the fractionalization of magnons into spinons and, in this deconfined regime, observe both commensurate and incommensurate continua.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0812.3880
dc.identifierhttp://arxiv.org/abs/0812.3880
dc.identifierPhys. Rev. Lett. 102, 107204 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.107204
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224417
dc.subjectStrongly Correlated Electrons
dc.titleDirect Observation of Magnon Fractionalization in the Quantum Spin Ladder
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