DIRECT OBSERVATION OF THE Q=0 SPIN-PEIERLS GAP IN CUGEO3 BY HIGH-FIELD ESR

Authors
BRILL TM BOUCHER JP VOIRON J PALME W LUTHI B DHALENNE G REVCOLEVSCHI A
Citation
Tm. Brill et al., DIRECT OBSERVATION OF THE Q=0 SPIN-PEIERLS GAP IN CUGEO3 BY HIGH-FIELD ESR, Journal of magnetism and magnetic materials, 140, 1995, pp. 1683-1684
Citations number
10
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
140
Year of publication
1995
Part
3
Pages
1683 - 1684
Database
ISI
SICI code
0304-8853(1995)140:<1683:DOOTQS>2.0.ZU;2-K
Abstract
We present high-field Electron Spin Resonance (ESR) measurements on th e spin-Peierls compound CuGeO3. We distinguish between two types of ES R transitions in the dimerized phase. They are associated with two ene rgy gaps located at different points in the Brillouin zone. The renorm alization of a q = 0 gap at E(g)' = 64 K as a function of temperature is measured.