Quasiparticle scattering interference in high-temperature superconductors

被引:287
作者
Wang, QH [1 ]
Lee, DH
机构
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[2] Nanjing Univ, Inst Solid State Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[3] Tsinghua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
关键词
D O I
10.1103/PhysRevB.67.020511
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We propose that the energy-dependent spatial modulation of the local density of states seen by Hoffman [Science 297, 1148 (2002)] is due to the scattering interference of quasiparticles. In this paper we present the general theoretical basis for such an interpretation and lay out the underlying assumptions. As an example, we perform an exact T-matrix calculation for the scattering due to a single impurity. The results of this calculation is used to check the assumptions, and to demonstrate that quasiparticle scattering interference can indeed produce patterns similar to those observed by Hoffman et al.
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页数:4
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