Abstract
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.
Original language | English |
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Pages (from-to) | 1445-1446 |
Number of pages | 2 |
Journal | Physica B: Condensed Matter |
Volume | 403 |
Issue number | 5-9 |
DOIs | |
State | Published - 1 Apr 2008 |
Externally published | Yes |
Keywords
- Quantum critical point
- Spin chains
- Thermal conductivity