Biancun Xie, Madhavan Swaminathan, et al.
EMC 2011
Based on macroscopic quantum coherence effects arising from pair tunneling and flux quantization, a series of tricrystal experiments have been designed and carried out to test the order parameter symmetry in high-T c cuprate superconductors. By using a scanning SQUID microscope, we have directly and non-invasively observed the spontaneously generated half-integer flux quantum effect in controlled-orientation tricrystal cuprate superconducting systems. The presence or absence of the half-integer flux quantum effect as a function of the tricrystal geometry allows us to prove that the order parameter symmetry in the YBCO and T12201 systems is consistent with that of the dx2-y2pair state.
Biancun Xie, Madhavan Swaminathan, et al.
EMC 2011
S. Cohen, T.O. Sedgwick, et al.
MRS Proceedings 1983
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
R.M. Macfarlane, R.L. Cone
Physical Review B - CMMP