J. Mannhart, R.P. Huebener, et al.
Physica A: Statistical Mechanics and its Applications
A high-resolution scanning superconducting quantum interference device microscopy study of tetragonal single-layer Tl2Ba2CuO6+δ films, deposited on tricrystal SrTiO3 substrates, demonstrates the effect of spontaneously generated half flux quanta. This observation shows that in addition to YBa2Cu3O7, the order parameter symmetry in Tl2Ba2CuO6+δ is consistent with that of a dx2-y2 pair state. This result also rules out any bilayer or twinning effects and any pairing that is incompatible with the fourfold rotational symmetry as in the Tl2Ba2CuO6+δ superconducting system.
J. Mannhart, R.P. Huebener, et al.
Physica A: Statistical Mechanics and its Applications
J.R. Kirtley, R.M. Feenstra, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
A. Gupta, R. Gross, et al.
Physical Review Letters
J.C. Tsang, J.E. Demuth, et al.
Chemical Physics Letters