Soft x-ray diffraction of striated muscle
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
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.
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
A. Ney, R. Rajaram, et al.
Journal of Magnetism and Magnetic Materials
Ming L. Yu
Physical Review B
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000