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Article overview
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Scaling of dynamic spin correlations in BaCu2SiGeO7 | | A. Zheludev
; T. Masuda
; G. Dhalenne
; A. Revcolevschi
; C. Frost
; T. Perring
; | | Date: |
1 Nov 2006 | | Subject: | Strongly Correlated Electrons | | Abstract: | The magnetic dynamic structure factor of the one-dimensional S = 1/2 chain system BaCu2(Si0.5Ge0.5)2O7 is studied in a wide range of energy transfers and temperatures. Contrary to previous erroneous reports [T. Masuda et al., Phys. Rev. Lett. 93, 077206 (2004)], the scaling properties observed in the range 0.5-25 meV are found to be fully consistent with expectations for a Luttinger spin liquid. At higher energies, a breakdown of scaling laws is observed and attributed to lattice effects. The results are complementary to those found in literature for other S = 1/2-chain compounds, such as KCuF3 and Cu-benzoate. | | Source: | arXiv, cond-mat/0611030 | | Services: | Forum | Review | PDF | Favorites | |
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