Erratum: Dynamics and scaling in a quantum spin chain material with bond randomness

Details Erratum: Dynamics and scaling in a quantum spin chain material with bond randomness Erratum: Dynamics and scaling in a quantum spin chain material with bond randomness

2004-04-28

arxiv.org/abs/cond-mat/0404688v2

Physics

Condensed Matter

Strongly Correlated Electrons

This is a complete withdrawal of the original paper, also published as in Phys. Rev. Lett 93, 077206 (2004). One page, one fig

Scientific paper

10.1103/PhysRevLett.93.077206

Follow-up neutron measurements, performed on a sample much larger than the one used in the original study, show that in the energy range 0.5-45 meV the magnetic excitations in BaCu2SiGeO7 are indistinguishable from those in conventional (disorder-free) quantum S=1/2 chains. Scrutinizing the previous data, we found that the analysis was affected by a poorly identified structured background and an additional technical mistake in the data reduction.

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