Importance of the magnetic ground state of Pr for T{sub c} suppression in high-Tc superconductors.
An increase in the magnetic, quasi-triplet average ground-state splitting of Pr in Pb{sub 2}Sr{sub 2}Pr{sub 0.5}Ca{sub 0.5}Cu{sub 3}O{sub 8} (T{sub c} = 60 K) compared to that observed for the parent, Ca-free compound, is observed by inelastic neutron scattering. The increase in splitting due to Ca doping demonstrates that Ca is altering the electronic properties of Pr in addition to its role in charge transfer. It is argued that Ca doping is effectively suppressing superconducting pair breaking by changing the single-ion magnetic properties of the Pr ions. This points toward pair breaking as the cause of T{sub c} suppression in Pr-based compounds.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- ER
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 938202
- Report Number(s):
- ANL/MSD/JA-28195
- Journal Information:
- Europhy. Lett., Journal Name: Europhy. Lett. Journal Issue: 6 ; 1997 Vol. 39; ISSN 0295-5075; ISSN EULEEJ
- Country of Publication:
- United States
- Language:
- ENGLISH
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