Quasiparticle scattering interference in high-temperature superconductors
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In this article, the energy-dependent spatial modulation of the local density of states seen by Hoffman et al. is due to the scattering interference of quasiparticles, and the results of this calculation are used to check the assumptions.Abstract:
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.read more
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References
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Jennifer Hoffman,Eric Hudson,Eric Hudson,Kristine Lang,Vidya Madhavan,H. Eisaki,S. Uchida,J. C. Davis,J. C. Davis +8 more
TL;DR: Scanning tunneling microscopy is used to image the additional quasi-particle states generated by quantized vortices in the high critical temperature superconductor Bi2Sr2CaCu2O8+δ, showing a copper-oxygen bond–oriented “checkerboard” pattern, with four unit cell periodicity and a ∼30 angstrom decay length.
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Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+δ
Jennifer Hoffman,Kyle McElroy,D.-H. Lee,D.-H. Lee,Kristine Lang,Kristine Lang,Hiroshi Eisaki,Hiroshi Eisaki,S. Uchida,J. C. Davis,J. C. Davis +10 more
TL;DR: In this article, the authors show that quasiparticle interference, due to elastic scattering between characteristic regions of momentum-space, provides a consistent explanation for the conductance modulations, without appeal to another order parameter.
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Signature of Superfluid Density in the Single-Particle Excitation Spectrum of Bi2Sr2CaCu2O8+δ
Donglai Feng,Donghui Lu,Kang Shen,Changyoung Kim,Hiroshi Eisaki,Andrea Damascelli,Ryozo Yoshizaki,Jun-ichi Shimoyama,Koji Kishio,Genda Gu,Seongshik Oh,A. E. Andrus,J. O'Donnell,James N. Eckstein,Zhi-Xun Shen +14 more
TL;DR: In this paper, the doping and temperature dependence of photoemission spectra near the Brillouin zone boundary of Bi2Sr2CaCu2O8+δ are investigated.
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Phenomenological models for the gap anisotropy of Bi2Sr2CaCu2O8 as measured by angle-resolved photoemission spectroscopy.
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