Intrinsic Tunneling in Cuprates and Manganites

Details Intrinsic Tunneling in Cuprates and Manganites Intrinsic Tunneling in Cuprates and Manganites

2001-07-23

arxiv.org/abs/cond-mat/0107463v1

Physics

Condensed Matter

Superconductivity

6 pages, 8 figures

Scientific paper

10.1016/S0921-4534(01)01031-0

The most anisotropic high temperature superconductors like Bi2Sr2CaCu2O8, as well as the recently discovered layered manganite La1.4Sr1.6Mn2O7 are layered metallic systems where the interlayer current transport occurs via sequential tunneling of charge carriers. As a consequence, in Bi2Sr2CaCu2O8 adjacent CuO2 double layers form an intrinsic Josephson tunnel junction while in in La1.4Sr1.6Mn2O7 tunneling of spin polarized charge carriers between adjacent MnO2 layers leads to an intrinsic spin valve effect. We present and discuss interlayer transport experiments for both systems. To perform the experiments small sized mesa structures were patterned on top of single crystals of the above materials defining stacks of a small number of intrinsic Josephson junctions and intrinsic spin valves, respectively.

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