Theory of scanning tunneling spectroscopy of magnetic-field-induced discrete nodal states in a d-wave superconductor

被引：15

作者：

Jankó, B ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Sci Mat, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.82.4703

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the presence of an external magnetic field, the low lying elementary excitations of a d-wave superconductor have quantized energy and their momenta are locked near the node direction. It is argued that these discrete states can most likely be detected by a local probe, such as a scanning tunneling microscope. The low temperature local tunneling conductance on the Wigner-Seitz cell boundaries of the vortex lattice is predicted to show peaks spaced as +/- root n, n = {0, 1,2,...}. Away from the cell boundary, where the superfluid velocity is nonzero, each peak splits, in general, into four peaks, corresponding to the number of nodes in the order parameter. [S0031-9007(99)09303-5].

引用

页码：4703 / 4706

页数：4

共 34 条

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