The YBa2Cu3O7-x compound contains two conductive subsystem and as a result displays a two-gap structure. The Cu-O2 planes are characterized by intrinsic pairing, whereas the superconducting state of the Cu-O chains is induced by two different charge-transfer channels (intrinsic proximity effect and phonon-mediated transfer). Oxygen ordering affects the value of the induced energy gap. Such spectrum along with a short coherence length lead to peculiar microwave properties of YBCO thin films. The large residual microwave losses are explained in the framework of the two-gap model. © 1992 Plenum Publishing Corporation.
Two-gap superconductivity and microwave properties of YBCO / Andreone, A.; Kresin, V. Z.; Wolf, S. A.. - In: JOURNAL OF SUPERCONDUCTIVITY. - ISSN 0896-1107. - 5:4(1992), pp. 339-344. [10.1007/BF00618133]
Two-gap superconductivity and microwave properties of YBCO
Andreone A.
;
1992
Abstract
The YBa2Cu3O7-x compound contains two conductive subsystem and as a result displays a two-gap structure. The Cu-O2 planes are characterized by intrinsic pairing, whereas the superconducting state of the Cu-O chains is induced by two different charge-transfer channels (intrinsic proximity effect and phonon-mediated transfer). Oxygen ordering affects the value of the induced energy gap. Such spectrum along with a short coherence length lead to peculiar microwave properties of YBCO thin films. The large residual microwave losses are explained in the framework of the two-gap model. © 1992 Plenum Publishing Corporation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
