Abstract
The spin singlet state and the hole-induced antiferromagnetism of the spin ladder system Sr 2.5Ca 11.5Cu 24O 41, which shows superconductivity under high pressure, have been studied by neutron scattering under the pressures up to 3.0 GPa. The results for the spin gap excitations indicate that the intensity decreases progressively with increasing pressure; however, they suggest that the spin gap energy is almost the same as that at ambient pressure, ∼32 meV. The intensity for the antiferromagnetic order, and the magnetic moment, decreases with increasing pressure, and seems to disappear at the critical pressure for the superconductivity. On the other hand, the Néel temperature T N (about 2 K at ambient pressure) increases slightly.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
