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Title: Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions

Abstract

We study the magnetic-field-induced quantum phase transition from a gapped quantum phase that has no magnetic long-range order into a gapless phase in the spin-1/2 ladder compound bis(2,3-dimethylpyridinium) tetrabromocuprate (DIMPY). At temperatures below about 1 K, the specific heat in the gapless phase attains an asymptotic linear temperature dependence, characteristic of a Tomonaga-Luttinger liquid. Inelastic neutron scattering and the specific heat measurements in both phases are in good agreement with theoretical calculations, demonstrating that DIMPY is the first model material for an S=1/2 two-leg spin ladder in the strong-leg regime.

Authors:
 [1];  [2];  [1];  [3];  [3];  [3];  [4];  [5];  [6];  [7];  [7];  [8]
  1. University of Florida, Gainesville
  2. Kyoto Sangyo University
  3. Clark University
  4. NIST Center for Neutron Research (NCRN), Gaithersburg, MD
  5. Laboratory for Neutron Scattering ETHZ & PSI
  6. Riso National Laboratory, Roskilde, Denmark
  7. Technische Universit Dortmund, Germany
  8. Johns Hopkins University
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:
989131
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 105; Journal Issue: 13; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; NEUTRONS; SCATTERING; SPECIFIC HEAT; SPIN; TEMPERATURE DEPENDENCE

Citation Formats

Kim, Y. H., Hotta, C., Takano, Y., Tremelling, G., Turnbull, M. M., Landee, C., Kang, H. -J., Christensen, N. B., Lefmann, K., Schmidt, K. P., Uhrig, G. S., and Broholm, C. Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions. United States: N. p., 2010. Web.
Kim, Y. H., Hotta, C., Takano, Y., Tremelling, G., Turnbull, M. M., Landee, C., Kang, H. -J., Christensen, N. B., Lefmann, K., Schmidt, K. P., Uhrig, G. S., & Broholm, C. Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions. United States.
Kim, Y. H., Hotta, C., Takano, Y., Tremelling, G., Turnbull, M. M., Landee, C., Kang, H. -J., Christensen, N. B., Lefmann, K., Schmidt, K. P., Uhrig, G. S., and Broholm, C. Fri . "Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions". United States.
@article{osti_989131,
title = {Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions},
author = {Kim, Y. H. and Hotta, C. and Takano, Y. and Tremelling, G. and Turnbull, M. M. and Landee, C. and Kang, H. -J. and Christensen, N. B. and Lefmann, K. and Schmidt, K. P. and Uhrig, G. S. and Broholm, C.},
abstractNote = {We study the magnetic-field-induced quantum phase transition from a gapped quantum phase that has no magnetic long-range order into a gapless phase in the spin-1/2 ladder compound bis(2,3-dimethylpyridinium) tetrabromocuprate (DIMPY). At temperatures below about 1 K, the specific heat in the gapless phase attains an asymptotic linear temperature dependence, characteristic of a Tomonaga-Luttinger liquid. Inelastic neutron scattering and the specific heat measurements in both phases are in good agreement with theoretical calculations, demonstrating that DIMPY is the first model material for an S=1/2 two-leg spin ladder in the strong-leg regime.},
doi = {},
url = {https://www.osti.gov/biblio/989131}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 13,
volume = 105,
place = {United States},
year = {2010},
month = {1}
}