Matches in SemOpenAlex for { <https://semopenalex.org/work/W2012772088> ?p ?o ?g. }
- W2012772088 abstract "The magnetic spectrum at high energies in heavily underdoped $mathrm{Y}{mathrm{Ba}}_{2}{mathrm{Cu}}_{3}{mathrm{O}}_{6.35}$ $({T}_{c}=18phantom{rule{0.3em}{0ex}}mathrm{K})$ has been determined throughout the Brillouin zone. At low energy, the scattering forms a cone of spin excitations emanating from the antiferromagnetic (0.5,0.5) wave vector with an acoustic velocity similar to that of insulating cuprates. At high-energy transfers, below the maximum energy of $270phantom{rule{0.3em}{0ex}}mathrm{meV}$ at (0.5,0), we observe zone-boundary dispersion much larger and spectral weight loss more extensive than in insulating antiferromagnets. Moreover, we report phenomena not found in insulators, an overall lowering of the zone-boundary energies and a large damping of $ensuremath{sim}100phantom{rule{0.3em}{0ex}}mathrm{meV}$ of the spin excitations at high energies. The energy above which the damping occurs coincides approximately with the gap determined from transport measurements. We propose that as the energy is raised, the spin excitations encounter an extra channel of decay into particle-hole pairs of a continuum that we associate with the pseudogap." @default.
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- W2012772088 date "2007-05-29" @default.
- W2012772088 modified "2023-09-25" @default.
- W2012772088 title "Evidence for decay of spin waves above the pseudogap of underdopedYBa2Cu3O6.35" @default.
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- W2012772088 doi "https://doi.org/10.1103/physrevb.75.172510" @default.
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