EXCHANGE SPLITTING IN CUGEO3 UNDER ULTRAHIGH MAGNETIC-FIELDS

Authors
NOJIRI H SHIMAMOTO Y MIURA N HASE M UCHINOKURA K KOJIMA H TANAKA I SHIBUYA Y
Citation
H. Nojiri et al., EXCHANGE SPLITTING IN CUGEO3 UNDER ULTRAHIGH MAGNETIC-FIELDS, Physical review. B, Condensed matter, 57(17), 1998, pp. 10276-10279
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
57
Issue
17
Year of publication
1998
Pages
10276 - 10279
Database
ISI
SICI code
0163-1829(1998)57:17<10276:ESICUU>2.0.ZU;2-B
Abstract
Electron paramagnetic resonance has been observed on CuGeO3 in ultrahi gh magnetic fields up to 180 T. The distinct exchange splitting is fou nd between the two inequivalent Cu2+ sites along the b axis. Analyzing the data on the basis of a simple two-spin model, we evaluated the in terchain exchange coupling J(b) as similar to 0.9 meV. This value is a little smaller than J(b) similar to 1.0 meV obtained by neutron-scatt ering experiments. [S0163-1829(98)06917-3].