Neutron scattering from magnetic excitations in Bi2Sr2CaCu2O8+delta
Article Abstract:
It has been possible to observe a magnetic resonance peak in the superconducting state in inelastic neutron scattering measurements of the copper oxide system Bi2Sr2CaCu2O8+delta. The magnetic excitation spectra of Bi2Sr2CaCu2O8+delta and YBa2Cu3O7 show a clear similarity. In the superconducting state, the magnetic intensity is strongly focused around a single point in energy and wavevector. The intensity is too broad or too weak to be seen above background in the normal state.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Quantum magnetic excitations from stripes in copper oxide superconductors
Article Abstract:
Superconductivity in copper oxide appears when mobile 'holes' are doped into the insulating state, and it coexists with antiferromagnetic fluctuations. In order to describe the coexistence, the holes are believed to self-organize into 'stripes' that alternate with antiferromagnetic (insulating) regions within copper oxide planes that would necessitate an unconventional mechanism of superconductivity.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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Two-dimensional geometry of spin excitations in the high-transition-temperature superconductor YBa2Cu3O(super 6+x)
Article Abstract:
Copper oxide superconductors are built on a Cu4O4 plaquette. There is a debate over the geometry of the two-dimensional magnetic fluctuations that appear in rigid stripe arrays in YBa2Cu3O(super 6+x).
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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