Journal article
Characterisation of spin-waves in copper(II) deuteroformate tetradeuterate: A square ¤S¤=1/2 Heisenberg antiferromagnet
In
Solid State Communications
—
1999, Volume 112, Issue 10, pp. 561-564
Abstract
Copper(II) formate tetrahydrate (CFTH) is a model square S = 1/2 Heisenberg antiferromagnet with T-N = 16.54 +/- 0.05 K. The dispersion of spin-waves in the magnetic layers of a fully deuterated sample of this material has been mapped at 4.3 K by inelastic neutron scattering from the zone centre at 0.38 meV to the zone boundary at 14.8 meV, The data are described well by spin-wave theory with a small correction for quantum fluctuations, yielding a nearest-neighbour in-plane exchange constant of 6.3 +/- 0.2 meV, (C) 1999 Elsevier Science Ltd, All rights reserved.
| Language: | English |
|---|---|
| Year: | 1999 |
| Pages: | 561-564 |
| ISSN: | 18792766 and 00381098 |
| Types: | Journal article |
| DOI: | 10.1016/S0038-1098(99)00400-7 |
Keywords
