TY - JOUR
T1 - Specific heat study of an s = 1/2 alternating heisenberg chain system
T2 - F5PNN in a magnetic field
AU - Yoshida, Y.
AU - Tateiwa, N.
AU - Mito, M.
AU - Kawae, T.
AU - Takeda, K.
AU - Hosokoshi, Y.
AU - Inoue, K.
PY - 2005/1/28
Y1 - 2005/1/28
N2 - We have measured the specific heat of an S = 1/2 antiferromagnetic alternating Heisenberg chain pentafulorophenyl nitronyl nitroxide in magnetic fields up to H > HC2. This compound has a field-induced magnetic ordered (FIMO) phase between HC1 and HC2. Characteristic behaviors are observed depending on the magnetic field up to above H C2 outside of the H-T boundary for the FIMO. The temperature and field dependence of the specific heat are qualitatively in good agreement with the theoretical calculation on an S = 1/2 two-leg ladder [Wang et al., Phys. Rev. Lett. 84, 5399 (2000)]. This agreement suggests that the observed behaviors are related with the low-energy excitation in the Tomonaga-Luttinger liquid.
AB - We have measured the specific heat of an S = 1/2 antiferromagnetic alternating Heisenberg chain pentafulorophenyl nitronyl nitroxide in magnetic fields up to H > HC2. This compound has a field-induced magnetic ordered (FIMO) phase between HC1 and HC2. Characteristic behaviors are observed depending on the magnetic field up to above H C2 outside of the H-T boundary for the FIMO. The temperature and field dependence of the specific heat are qualitatively in good agreement with the theoretical calculation on an S = 1/2 two-leg ladder [Wang et al., Phys. Rev. Lett. 84, 5399 (2000)]. This agreement suggests that the observed behaviors are related with the low-energy excitation in the Tomonaga-Luttinger liquid.
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U2 - 10.1103/PhysRevLett.94.037203
DO - 10.1103/PhysRevLett.94.037203
M3 - Article
AN - SCOPUS:18144387268
SN - 0031-9007
VL - 94
JO - Physical review letters
JF - Physical review letters
IS - 3
M1 - 037203
ER -