Hydrostatic pressure dependence of the superconducting transition temperature of HgBa{sub 2}CaCu{sub 2}O{sub 6+delta} and HgBa{sub 2}Cu{sub 3}O{sub 8+delta}.
A phonon-mediated d-wave BCS-like model is presented for a homologous series of layered cuprate superconductors. We show that the dependence of both the superconducting transition temperature {Tc} and oxygen isotope exponent {alpha} on the doping level, number of CuO{sub 2} layers, pressure, and cation disorder in the model superconducting series HgBa{sub 2}Ca{sub n-1}Cu{sub n}O{sub 2n+2+{delta}} can be well reproduced within one single theoretical framework. We also find that the theoretical model accounts well for the superconducting transitions in other homologous series such as the bismuth- and thallium-based family. Our results suggest that the interlayer coupling plays an important role in the significant enhancement of {Tc} and in the systematic reduction of {alpha} in a layered homologous series.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- ER; NSF
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 937702
- Report Number(s):
- ANL/MSD/JA-13269
- Journal Information:
- Physica C, Journal Name: Physica C Journal Issue: 1994 Vol. 223; ISSN 0921-4534; ISSN PHYCE6
- Country of Publication:
- United States
- Language:
- ENGLISH
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