Spatial modulations of mid-gap states in (001)La$_{1.88}$Sr$_{0.12}$CuO$_4$ films: Indications for anti-phase ordering of the d-wave order parameter
| Autor: | Yuli, Ofer, Asulin, Itay, Koren, Gad, Millo, Oded |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 81, 024516 (2010) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.81.024516 |
| Popis: | Using scanning tunneling spectroscopy we have investigated the spatial evolution of the anomalous c-axis zero bias conductance peak, discovered in a previous study by our group, in epitaxial La$_{1.88}$Sr$_{0.12}$CuO$_4$ thin films. We found an anisotropic spatial dependence of the corresponding low-energy density of states which complies with the predicted spectral features of an anti-phase ordering of the d-wave order parameter within the ab-plane. Such an ordering was recently suggested to account for the 1/8 anomaly in the high temperature superconductors and the dynamical layer decoupling recently reported to occur in the transport studies of La$_{15/8}$Ba$_{1/8}$CuO$_4$. Comment: Revised version with editorial title change, added clarifications and references. 7 pages 6 figs |
| Databáze: | arXiv |
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