MIDGAP SURFACE-STATES AS A NOVEL SIGNATURE FOR D(X(A)(2)-X(B)(2))-WAVE SUPERCONDUCTIVITY
MIDGAP SURFACE-STATES AS A NOVEL SIGNATURE FOR D(X(A)(2)-X(B)(2))-WAVE SUPERCONDUCTIVITY
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DOI：
10.1103/physrevlett.72.1526
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发表时间：
1994-03-07
影响因子：
8.6
通讯作者：
HU, CR
中科院分区：
文献类型：
--
作者：
HU, CR
结果表明，d(x)a2-x(b)2 波超导体的 {110} 表面上存在相当大的中带隙态面密度，该超导体的表面可以具有真空或绝缘体，也可以通过干净的、尺寸量子化的普通金属覆盖层与真空或绝缘体隔开。这些“中带隙”状态具有许多可观察到的结果（其中一些在此简要讨论）可以用作区分 d 波和各向异性 s 波超导体的清晰特征。
It is shown that a sizable areal density of midgap states exists on a {110} surface of a d(x)a2-x(b)2-wave superconductor, which can either have vacuum or an insulator at the surface, or be separated from vacuum or an insulator by a clean, size-quantized, normal metal overlayer. These ''midgap'' states have many observable consequences-some of which axe briefly discussed here-which can be used as a clear signature to distinguish between d-wave and anisotropic s-wave superconductors.