W.L. Johnson, C.C. Tsuei
Physical Review B
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.
W.L. Johnson, C.C. Tsuei
Physical Review B
A.G. Schrott, K.N. Tu, et al.
Physical Review B
J.C. Tsang, Ph. Avouris, et al.
Journal of Electron Spectroscopy and Related Phenomena
A. Samoilov, N.C. Yeh, et al.
Physical Review B - CMMP