Quasiparticle scattering interference in high-temperature superconductors

By Qiang-Hua Wang, Dung-Hai Lee. 2002

233 citations recorded by the source corpus.

We propose that the energy-dependent spatial modulation of the local density of states seen by Hoffman et al. [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.

Subfields: Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/6a99dded2dd783797bb920981948f6d8744e394c

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In Condensed Matter Physics

1. Shina Tan
2. K. Levin
3. S. Sachdev
4. D. Feng
5. Qijin Chen
6. J. Stajic
7. S. Hartnoll
8. Tiberiu Harko

Citations in the corpus

• Order and quantum phase transitions in the cuprate superconductors (2002, background): “…Howald et al., 2003, 2002) have focused on the H = 0 region: here the modulations appear to have significant contributions (Byers et al., 1993; Wang and Lee, 2003) from scattering of the fermionic S = 1/2 quasiparticles of the superconductor (Section II), but there are also signals (Howald et…”
• BCS BEC crossover: From high temperature superconductors to ultracold superfluids (2004, background): “There are also analogous STM effects which are currently of interest (Wang and Lee, 2003).”
• Plain s-wave superconductivity in single-layer FeSe on SrTiO3 probed by scanning tunnelling microscopy (2015, background): “STM has been shown to be able to provide information on the pairing symmetry by measuring local response of superconductivity to impurities (in-gap impurity states) [20-22] and through quasi-particle interference (QPI) patterns [23-25].”
• Charge-density-wave origin of cuprate checkerboard visualized by scanning tunnelling microscopy (2008, background): “QPI wave vectors depend strongly on energy because they are formed by interference of elastically scattered quasiparticles residing on equal-energy contours of the Fermi surfac”