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

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

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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:

Kim, Y. H. ^[1]; Hotta, C. ^[2]; Takano, Y. ^[1]; Tremelling, G. ^[3]; Turnbull, M. M. ^[3]; Landee, C. ^[3]; Kang, H. -J. ^[4]; Christensen, N. B. ^[5]; Lefmann, K. ^[6]; Schmidt, K. P. ^[7]; Uhrig, G. S. ^[7]; Broholm, C. ^[8]

University of Florida, Gainesville
Kyoto Sangyo University
Clark University
NIST Center for Neutron Research (NCRN), Gaithersburg, MD
Laboratory for Neutron Scattering ETHZ & PSI
Riso National Laboratory, Roskilde, Denmark
Technische Universit Dortmund, Germany
Johns Hopkins University

Publication Date:: 2010-01-01

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.

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                    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.

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                    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.

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@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}

}

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