Abstract
The thermal conductivity and heat capacity of single crystals of the spin [Formula presented] quasi-2D Heisenberg antiferromagnet [Formula presented] have been measured from 1.9 to 300 K in magnetic fields from 0 to 8 T. The zero field thermal conductivity data are consistent with resonant scattering of phonons by magnons near the zone boundary. Application of a magnetic field greater than 1 T, however, produces a new magnetic ground state with substantial heat transport by long wavelength magnons.
| Original language | English |
|---|---|
| Pages (from-to) | 4 |
| Number of pages | 1 |
| Journal | Physical Review Letters |
| Volume | 88 |
| Issue number | 9 |
| DOIs | |
| State | Published - 2002 |