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(A) Cu K-edge XANES of oriented YBCO and YSCO-Mo. (B) Mo K-edge XANES of MoO3 parallel (light blue) and perpendicular (dark blue) to the very short, terminal Mo–O multiple bond, MoO2 parallel and perpendicular to the directions of its Mo–Mo chains, and the YSCO-Mo along its two orientations.
