TY - JOUR AU - Q Li AU - X.X Xi AU - X.D Wu AU - A Inam AU - S Vadlamannati AU - W.L McLean AU - T Venkatesan AU - Ramamoorthy Ramesh AU - D.M Hwang AU - J.A Martinez AU - L Nazar AB - The effect of coupling between layers of the high-Tc superconductors was studied by varying both the YBa2Cu3O7-x and PrBa2Cu3O7-x layer thicknesses in YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices. Superconductivity was found even when the YBa2Cu3O7-x layers had nominal thicknesses as small as 12 (one unit-cell thickness) but coupling between unit-cell layers is needed to achieve a Tc of 90 K. The decrease of Tc in isolated YBa2Cu3O7-x layers with increasing sheet resistance is on the same scale of about Latin small letter h with stroke/e2 as observed for ordinary superconductors. © 1990 The American Physical Society. BT - Physical Review Letters DO - 10.1103/PhysRevLett.64.3086 LA - eng M1 - 25 N1 - cited By 313 N2 - The effect of coupling between layers of the high-Tc superconductors was studied by varying both the YBa2Cu3O7-x and PrBa2Cu3O7-x layer thicknesses in YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices. Superconductivity was found even when the YBa2Cu3O7-x layers had nominal thicknesses as small as 12 (one unit-cell thickness) but coupling between unit-cell layers is needed to achieve a Tc of 90 K. The decrease of Tc in isolated YBa2Cu3O7-x layers with increasing sheet resistance is on the same scale of about Latin small letter h with stroke/e2 as observed for ordinary superconductors. © 1990 The American Physical Society. PY - 1990 SP - 3086 EP - 3089 T2 - Physical Review Letters TI - Interlayer coupling effect in high-Tc superconductors probed by YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices VL - 64 SN - 00319007 ER -