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Title: Scaling of Dynamic Spin Correlations in BaCu 2(Si 0.5Ge 0.5) 2O 7

Abstract

The magnetic dynamic structure factor of the one-dimensional S=1/2 chain system BaCu{sub 2}(Si{sub 0.5}Ge{sub 0.5}){sub 2}O{sub 7} 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 KCuF{sub 3} and Cu benzoate.

Authors:
 [1];  [2];  [3];  [3];  [4];  [4]
  1. ORNL
  2. Yokohama City University, Japan
  3. Universite Paris Sud, Orsay, France
  4. ISIS Facility, Rutherford Appleton Laboratory
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Flux Isotope Reactor
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
966385
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 75; Journal Issue: 5
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM OXIDES; COPPER OXIDES; SILICON OXIDES; GERMANIUM OXIDES; ENERGY TRANSFER; SCALING LAWS; SPIN; STRUCTURE FACTORS; MAGNETIC PROPERTIES

Citation Formats

Zheludev, Andrey I, Masuda, T., Dhalenne, G., Revcolevschi, A., Frost, C., and Perring, T. G.. Scaling of Dynamic Spin Correlations in BaCu2(Si0.5Ge0.5)2O7. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.75.054409.
Zheludev, Andrey I, Masuda, T., Dhalenne, G., Revcolevschi, A., Frost, C., & Perring, T. G.. Scaling of Dynamic Spin Correlations in BaCu2(Si0.5Ge0.5)2O7. United States. doi:10.1103/PhysRevB.75.054409.
Zheludev, Andrey I, Masuda, T., Dhalenne, G., Revcolevschi, A., Frost, C., and Perring, T. G.. Mon . "Scaling of Dynamic Spin Correlations in BaCu2(Si0.5Ge0.5)2O7". United States. doi:10.1103/PhysRevB.75.054409.
@article{osti_966385,
title = {Scaling of Dynamic Spin Correlations in BaCu2(Si0.5Ge0.5)2O7},
author = {Zheludev, Andrey I and Masuda, T. and Dhalenne, G. and Revcolevschi, A. and Frost, C. and Perring, T. G.},
abstractNote = {The magnetic dynamic structure factor of the one-dimensional S=1/2 chain system BaCu{sub 2}(Si{sub 0.5}Ge{sub 0.5}){sub 2}O{sub 7} 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 KCuF{sub 3} and Cu benzoate.},
doi = {10.1103/PhysRevB.75.054409},
journal = {Physical Review B},
number = 5,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}