Magnetic properties of a molecular-based spin-ladder system: (5IAP)(2)CuBr4 center dot 2H(2)O - art. no. 100402

Authors
Landee, CP Turnbull, MM Galeriu, C Giantsidis, J Woodward, FM
Citation
Cp. Landee et al., Magnetic properties of a molecular-based spin-ladder system: (5IAP)(2)CuBr4 center dot 2H(2)O - art. no. 100402, PHYS REV B, 6310(10), 2001, pp. 0402
Citations number
28
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6310
Issue
10
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010301)6310:10<0402:MPOAMS>2.0.ZU;2-A
Abstract
We have synthesized and characterized a spin-1/2 Heisenberg antiferromagnet ic ladder: his 5-iodo-2-aminopyridinium tetrabromocuprate (II) dihydrate. X -ray diffraction studies show the structure of the compound to consist of w ell isolated stacked ladders and the interaction between the Cu2+ atoms to be due to direct Br . . . Br contacts. Magnetic susceptibility and magnetiz ation studies show the compound to be in the strong-coupling limit, with th e interaction along the rungs (J'approximate to 13 K) much greater than the interaction along the rails (J approximate to1 K). Magnetic critical field s are observed near 8.3 and 10.4 T, respectively, establishing the existenc e of the energy gap.