Possible p-wave condensed conductor (or superconductor) for La{sub 1{minus}x}Ca{sub x}MnO{sub 3} films
A ferromagnetic phase with electron carriers and a semiconducting phase with hole carriers were separated in La{sub 1{minus}x}Ca{sub x}MnO{sub 3} thin films by the van der Pauw method. The authors conclude that two phases are attributed to the metal-insulator instability. In the ferromagnetic phase for films with anisotropic moments in two dimensions, a remnant resistivity of the order of 10{sup {minus}8} {Omega}m is observed up to 100 K and increases exponentially with temperature up to {Tc} and above one Tesla as a function of magnetic field strength (a positive magnetoresistivity). The phase below {Tc} is regarded as a polaronic state with a polaronic tunneling conduction. Possible p-wave condensation (or superconductor) with a parabolic density of states and the phase separation are discussed on the basis of the two-fold degeneracy of e{sub g} orbitals.
- Research Organization:
- ETRI, Taejon (KR)
- OSTI ID:
- 20015177
- Journal Information:
- International Journal of Modern Physics B, Vol. 13, Issue 29-31; Conference: Second International Conference of New Theories, Discoveries and Applications of Superconductors and Related Materials (New{sup 3}SC-2), Las Vegas, NV (US), 06/01/1999; Other Information: PBD: 20 Dec 1999; ISSN 0217-9792
- Country of Publication:
- United States
- Language:
- English
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