@article{b406ae2df3b1477789f3a348c0901c3a,
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 1a 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.",
author = "Tao Hong and Kim, {Y. H.} and C. Hotta and Y. Takano and G. Tremelling and Turnbull, {M. M.} and Landee, {C. P.} and Kang, {H. J.} and Christensen, {N. B.} and K. Lefmann and Schmidt, {K. P.} and Uhrig, {G. S.} and C. Broholm",
year = "2010",
month = sep,
day = "23",
doi = "10.1103/PhysRevLett.105.137207",
language = "English",
volume = "105",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "13",
}