TY - JOUR
T1 - Magnetic field-dependent thermal transport in a spin-1/2 chain compound
AU - Sologubenko, A. V.
AU - Berggold, K.
AU - Lorenz, T.
AU - Rosch, A.
AU - Shimshoni, E.
AU - Phillips, M. D.
AU - Turnbull, M. M.
PY - 2008/4/1
Y1 - 2008/4/1
N2 - We present experimental results on the thermal conductivity κ of the S = 1 / 2 chain compound copper pyrazine dinitrate (C4 H4 N2) (NO3)2 at temperatures T between 0.37 and 10 K in magnetic fields B up to 17 T. The spin contribution κs (B, T) parallel to the chains has been identified. At low temperatures, κs (B) is characterized by two main features, namely a minimum at μB B ∼ kB T and a plateau-like feature in the vicinity of the saturation field. Analysis of the high-field data suggests that the mean free path is surprisingly weakly dependent on both field and momentum.
AB - We present experimental results on the thermal conductivity κ of the S = 1 / 2 chain compound copper pyrazine dinitrate (C4 H4 N2) (NO3)2 at temperatures T between 0.37 and 10 K in magnetic fields B up to 17 T. The spin contribution κs (B, T) parallel to the chains has been identified. At low temperatures, κs (B) is characterized by two main features, namely a minimum at μB B ∼ kB T and a plateau-like feature in the vicinity of the saturation field. Analysis of the high-field data suggests that the mean free path is surprisingly weakly dependent on both field and momentum.
KW - Quantum critical point
KW - Spin chains
KW - Thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=39749100590&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2007.10.167
DO - 10.1016/j.physb.2007.10.167
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AN - SCOPUS:39749100590
SN - 0921-4526
VL - 403
SP - 1445
EP - 1446
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 5-9
ER -