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

Abstract

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.

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

References in corpus (7)

• Quantum Impurities in the Two-Dimensional Spin One-Half Heisenberg Antiferromagnet
• Dynamics and transport in random quantum systems governed by strong-randomness fixed points
• Magnetic order and spin-waves in the quasi-1D S=1/2 antiferromagnet $\mathbf{BaC}{\mathbf{u}}_2\mathbf{S}{\mathbf{i}}_2{\mathbf{O}}_7$
• Energy separation of single-particle and continuum states in a S=1/2 weakly-coupled chains antiferromagnet
• Dynamics and Transport in Random Antiferromagnetic Spin Chains
• Dominance of excitation continuum in the longitudinal spectrum of weakly coupled Heisenberg S=1/2 chains
• Polarization dependence of spin excitations in BaCu2Si2O7

Cited by in corpus (16)

• Rare region effects at classical, quantum, and non-equilibrium phase transitions
• Scaling of Entanglement Entropy in the Random Singlet Phase
• Correlation amplitude and entanglement entropy in random spin chains
• Quantum spin chains with frustration due to Dzyaloshinskii-Moriya interactions
• Distribution of NMR relaxations in a random Heisenberg chain
• Dynamical properties of the $S=\frac{1}{2}$ random Heisenberg chain
• Fractional and composite excitations of antiferromagnetic quantum spin trimer chains
• Quantum disorder and Griffiths singularities in bond-diluted two-dimensional Heisenberg antiferromagnets
• Scaling of dynamic spin correlations in BaCu2SiGeO7
• Dynamic properties of quantum spin chains: Simple route to complex behavior
• The correlation functions of certain random antiferromagnetic spin-1/2 critical chains
• Impact of strong disorder on the static magnetic properties of the spin-chain compound BaCu2SiGeO7
• Violation of the Bell inequality in quantum critical random spin-$1/2$ chains
• Dynamics of weakly coupled random antiferromagnetic quantum spin chains
• Inhomogeneous ordering in weakly coupled Heisenberg $S=1/2$ chains with random bonds
• Dynamical properties of the Haldane chain with bond disorder