1. Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressure
2. Bulk superconductivity at 91 K in single-phase oxygen-deficient perovskiteBa2YCu3O9−δ
3. A.F. Marshall, R.W. Barton, K. Char, A. Kapitulnik, B. Oh, R.H. Hammond and S.S. Laderman, Phys. Rev. B, to be published.
4. K. Char, M. Lee, R.W. Barton, A.F. Marshall, I. Bozovic, R.H. Hammond, M.R. Beasley, T.H. Geballe, A. Kapitulnik and S.S. Laderman, Phys. Rev. B, to be published.
5. J. Kwo, M. Hong, R.M. Fleming, A.F. Hebard, M.L. Mandich, A.M. DeSantolo, B.A. Davidson, P. Marsh and N.D. Hobbins, Appl. Phys. Lett., submitted