TY - JOUR
T1 - Coexistence of the spin liquid state and the magnetic ordering in the spin ladder compound; Sr14-xCaxCu24O41
AU - Nagata, T.
AU - Fujino, H.
AU - Ohishi, K.
AU - Akimitsu, J.
AU - Katano, S.
AU - Nishi, M.
AU - Kakurai, K.
N1 - Funding Information:
This work was partially supported by a Grant-in Aid for Science Research from the Ministry of Education, Science and Culture, Japan and by a Grant from the CREST, and the Science Fund of Japan Private School Promotion Foundation.
PY - 1999
Y1 - 1999
N2 - The magnetic ground state in the hole-doped two-leg ladder system Sr2.5Ca11.5Cu24O41 both at ambient pressure and under high pressure up to 3 GPa was investigated by a neutron scattering experiment. The spin gap value for this system at ambient pressure is found to be 32.1 ± 0.3 meV, being almost the same as that of the parent material Sr14Cu24O41. With increasing pressure, the spin gap energy is almost unchanged, however, the inelastic neutron scattering intensity at the zone center of the ladder is decreased progressively. We also observed antiferromagnetic long range ordering below TN(approx. 2.1 K), which was increased with increasing pressure. A possible magnetic structure of this system is also discussed. These results show the coexistence of the spin liquid state and antiferromagnetic ordering in the hole-doped two-leg ladder system.
AB - The magnetic ground state in the hole-doped two-leg ladder system Sr2.5Ca11.5Cu24O41 both at ambient pressure and under high pressure up to 3 GPa was investigated by a neutron scattering experiment. The spin gap value for this system at ambient pressure is found to be 32.1 ± 0.3 meV, being almost the same as that of the parent material Sr14Cu24O41. With increasing pressure, the spin gap energy is almost unchanged, however, the inelastic neutron scattering intensity at the zone center of the ladder is decreased progressively. We also observed antiferromagnetic long range ordering below TN(approx. 2.1 K), which was increased with increasing pressure. A possible magnetic structure of this system is also discussed. These results show the coexistence of the spin liquid state and antiferromagnetic ordering in the hole-doped two-leg ladder system.
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U2 - 10.1016/S0022-3697(99)00044-X
DO - 10.1016/S0022-3697(99)00044-X
M3 - Conference article
AN - SCOPUS:0032590626
VL - 60
SP - 1039
EP - 1043
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 8
T2 - Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7)
Y2 - 24 November 1998 through 27 November 1998
ER -