S=1 2 QUANTUM SPIN-GAP IN 1-D ANTIFERROMAGNET WITH BOND ALTERNATION -NMR-STUDY OF CUCL2(GAMMA-PICOLINE)(2)/

Authors
CHIBA M KUBO T AJIRO Y ASANO T
Citation
M. Chiba et al., S=1 2 QUANTUM SPIN-GAP IN 1-D ANTIFERROMAGNET WITH BOND ALTERNATION -NMR-STUDY OF CUCL2(GAMMA-PICOLINE)(2)/, Czechoslovak journal of Physics, 46, 1996, pp. 1971-1972
Citations number
5
Categorie Soggetti
Physics
Journal title
Czechoslovak journal of Physics → ACNP
ISSN journal
00114626
Volume
46
Year of publication
1996
Supplement
4
Pages
1971 - 1972
Database
ISI
SICI code
0011-4626(1996)46:<1971:S2QSI1>2.0.ZU;2-G
Abstract
Proton NMR experiment has been performed in CuCl2(gamma-picoline)(2) u p to 9 T for the study of S = 1/2 quantum spin-gap in the one-dimensio nal antiferromagnet (1-D AF) with bond alternation. It is shown that t he proton NMR spectrum as well as the proton spin-lattice relaxation i s characterized by the singlet-ground-state. Furthermore, NMR results suggest the existence of the paramagnetic spin around the end of the f inite chain.