TY - JOUR
T1 - Spatial modulation of midgap states in (001) La1.88 Sr 0.12 CuO4 films
T2 - Indications for antiphase ordering of the d -wave order parameter
AU - Yuli, Ofer
AU - Asulin, Itay
AU - Koren, Gad
AU - Millo, Oded
PY - 2010/1/22
Y1 - 2010/1/22
N2 - 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 La1.88 Sr0.12 CuO4 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 antiphase 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 Ba1/8 CuO4.
AB - 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 La1.88 Sr0.12 CuO4 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 antiphase 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 Ba1/8 CuO4.
UR - http://www.scopus.com/inward/record.url?scp=77954806752&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.81.024516
DO - 10.1103/PhysRevB.81.024516
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AN - SCOPUS:77954806752
SN - 1098-0121
VL - 81
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 2
M1 - 024516
ER -