Hidden quantum spin gap state in the static stripe phase of La$_{2-x}$Sr$_{x}$CuO$_{4}$

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dc.creatorKofu, M.
dc.creatorLee, S. -H.
dc.creatorFujita, M.
dc.creatorKang, H. -J.
dc.creatorEisaki, H.
dc.creatorYamada, K.
dc.date2008-04-18
dc.date2008-12-05
dc.date.accessioned2026-07-07T12:34:12Z
dc.date.available2026-07-07T12:34:12Z
dc.descriptionLow energy spin excitations were investigated in the static stripe phase of La_{2-x}Sr_xCuO_4 using elastic and inelastic neutron scattering on single crystals. For x = 1/8 in which long-range static stripe order exists, an energy gap of E_g = 4 meV exists in the excitation spectrum in addition to strong quasi-elastic, incommensurate spin fluctuations associated with the static stripes. When x increases, the spectral weight of the spin fluctuations shifts from the quasi-elastic continuum to the excitation spectrum above E_g. The dynamic correlation length as a function of energy and the temperature evolution of the energy spectrum suggest a phase separation of two distinct magnetic phases in real space.
dc.description5pages, 4figures
dc.identifierhttps://arxiv.org/abs/0804.3041
dc.identifierhttp://arxiv.org/abs/0804.3041
dc.identifierPhys. Rev. Lett. 102, 047001 (2009)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217340
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleHidden quantum spin gap state in the static stripe phase of La$_{2-x}$Sr$_{x}$CuO$_{4}$
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