NMR evidence for Friedel-like oscillations in the CuO chains of ortho-II YBa[sub 2]Cu[sub 3]O[sub 6.5]

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TypeArticle
Journal titlePhys. Rev. B
Physical Review B (Condensed Matter and Materials Physics)
Volume73
Issue21
Pages2125064; # of pages: 212503
Subjectbarium compounds; charge density waves; high-temperature superconductors; NMR line breadth; spin density waves; yttrium compounds
AbstractNuclear magnetic resonance (NMR) measurements of CuO chains of detwinned ortho-II YBa2Cu3O6.5 (YBCO6.5) single crystals reveal unusual and remarkable properties. The chain Cu resonance broadens significantly, but gradually, on cooling from room temperature. The line shape and its temperature dependence are substantially different from that of a conventional spin/charge density wave (S/CDW) phase transition. Instead, the line broadening is attributed to small amplitude static spin and charge density oscillations with spatially varying amplitudes connected with the ends of the finite length chains. The influence of this CuO chain phenomenon is also clearly manifested in the plane Cu NMR.
Publication date
Linkhttp://link.aps.org/abstract/PRB/v73/e212506
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
NPARC number12338864
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Record identifier3ff5515b-058f-462d-b2e4-7e15b8042f7c
Record created2009-09-11
Record modified2016-05-09
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