CU-ISOTOPE EFFECT ON THE SPIN-PEIERLS TRANSITION-TEMPERATURE OF CUGEO3

Authors
KREMER RK HENN RW FAISST A WOSNITZA J VONLOHNEYSEN H
Citation
Rk. Kremer et al., CU-ISOTOPE EFFECT ON THE SPIN-PEIERLS TRANSITION-TEMPERATURE OF CUGEO3, Czechoslovak journal of Physics, 46, 1996, pp. 1977-1978
Citations number
13
Categorie Soggetti
Physics
Journal title
Czechoslovak journal of Physics → ACNP
ISSN journal
00114626
Volume
46
Year of publication
1996
Supplement
4
Pages
1977 - 1978
Database
ISI
SICI code
0011-4626(1996)46:<1977:CEOTST>2.0.ZU;2-6
Abstract
The Cu-isotope effect on the spin-Peierls transition temperature of si ngle crystals of CuGeO3 has been determined from magnetic susceptibili ty measurements. We observe a downshift of 0.08(2)K and 0.05(2)K of th e spin-Peierls transition temperature of (CuGeO3)-Cu-65 as compared to the transition temperatures of (CuGeO3)-Cu-nat and (CuGeO3)-Cu-63, re spectively. These results are discussed with respect to the Cu isotope mass dependence of the coupling constant lambda entering theoretical considerations.