Temperature dependence of electrodynamic properties of YBa2Cu3Oy crystals.
Temperature dependence of electrodynamic properties of YBa2Cu3Oy crystals.
复制标题
YBa2Cu3Oy 晶体电动特性的温度依赖性。
作者：
Sridhar;Wu;Kennedy
测量了 YBa{sub 2}Cu{sub 3}O{sub {ital y}} 晶体的射频穿透深度 {lambda}{sub {ital ab}}、微波表面电阻 {ital R}{sub {ital s}} 和下临界场 {ital H}{sub {ital c}1} 的温度依赖性。还测量了磁场对 {lambda}{sub {ital ab}} 的断对效应，由参数 {ital k}{identical to}{ital d}{lambda}{sub {ital ab}}/d(H{sup 2}) 表示。所有这些参数 {lambda}{sub {ital ab}}、{ital H}{sub {ital c}1}、{ital k} 和 {ital R}{sub {ital s}} 的温度依赖性与 {ital s} 波超导体的 Bardeen-Cooper-Schrieffer 温度依赖性非常一致，并表明间隙参数的平均场行为。
The temperature dependences of the radio-frequency penetration depth {lambda}{sub {ital ab}}, microwave surface resistance {ital R}{sub {ital s}}, and the lower critical field {ital H}{sub {ital c}1} were measured for YBa{sub 2}Cu{sub 3}O{sub {ital y}} crystals. Pair-breaking effects of magnetic fields on {lambda}{sub {ital ab}}, represented by a parameter {ital k}{identical to}{ital d}{lambda}{sub {ital ab}}/d(H{sup 2}), were also measured. The temperature dependences of all these parameters {lambda}{sub {ital ab}}, {ital H}{sub {ital c}1}, {ital k}, and {ital R}{sub {ital s}} are in good agreement with the Bardeen-Cooper-Schrieffer temperature dependences for an {ital s}-wave superconductor, and suggest a mean-field behavior of the gap parameter.