title: c-axis optical response in the static stripe ordered phase of the cuprates.
abstract: The c-axis far-infrared reflectivity spectra in the superconducting state were investigated for La1.85-yNd(y)Sr0.15CuO4. The Josephson plasma edge rapidly shifts towards lower frequency with increasing y, and almost disappears when y exceeds a critical value ( y(c) approximately 0.12) above which the low-temperature-tetragonal (LTT) deformation switches on, stabilizing the spin/charge ordered stripe phase. In the vicinity of y(c), a "normal state" reentrant behavior was observed with lowering temperature below Tc. This clearly demonstrates that the static stripe order pinned by the LTT distortion suppresses the interlayer phase coherence.
authors.affiliation: Superconductibility Research Laboratory, ISTEC, Tokyo, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Tajima
authors.forename: T
authors.initials: T
authors.lastname: Noda
authors.forename: H
authors.initials: H
authors.lastname: Eisaki
authors.forename: S
authors.initials: S
authors.lastname: Uchida