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Volumn 67, Issue 2, 2003, Pages

Quasiparticle scattering interference in high-temperature superconductors

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CALCULATION; CONDUCTOR; DENSITY; ENERGY; FOURIER ANALYSIS; MAGNETIC FIELD; TEMPERATURE;

EID: 0037220275     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.67.020511     Document Type: Article
Times cited : (343)

References (27)
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    • Phys. Rev. Lett.Jian-Xin Zhu, Ivar Martin, and A.R. Bishop, 89, 067003 (2002);
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    • K. McElroy et al. (unpublished)
    • K. McElroy et al. (unpublished).
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    • (cond-mat/0107042), and references cited therein
    • For a review of the angle-resolved-photo-emission study of the electronic structure in the cuprates, see, e. g., A. Damascelli, D.H. Lu, and Z.-X. Shen, J. Electron Spectrosc. Relat. Phenom. 117-118, 165 (2001) (cond-mat/0107042), and references cited therein.
    • (2001) J. Electron Spectrosc. Relat. Phenom. , vol.117-118 , pp. 165
    • Damascelli, A.1    Lu, D.H.2
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    • LDOS modulation caused by impurities was studied by, e.g., M Choi, Phys. Rev. B 50, 3491 (1994)
    • LDOS modulation caused by impurities was studied by, e.g., M Choi, Phys. Rev. B 50, 3491 (1994);
  • 18
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    • In the presence of order parameter suppression there is an additional anomalous scattering potential (due to the change in the gap parameter) around the location of the impurity. However, the strength of this anomalous scattering potential is bounded above by the maximal pairing gap in the bulk. Since the scalar potential is much stronger its effects dominate. We have done extensive calculations where there are both scalar and anomalous scattering potentials. The above statement has been checked carefully
    • In the presence of order parameter suppression there is an additional anomalous scattering potential (due to the change in the gap parameter) around the location of the impurity. However, the strength of this anomalous scattering potential is bounded above by the maximal pairing gap in the bulk. Since the scalar potential is much stronger its effects dominate. We have done extensive calculations where there are both scalar and anomalous scattering potentials. The above statement has been checked carefully.
  • 21
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    • Phys. Rev. Lett.Qiang-Hua Wang, 88, 057002 (2002)
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    • We have investigated the asymmetry of the (±1,±1) direction Fourier peaks upon bias reversal further. We find such asymmetry depends on the detailed quasiparticle dispersion. For example, by setting all the (Formula presented) except (Formula presented) to zero we find the asymmetry disappears. Thus we conclude that we must investigate the issue of the plus/minus bias voltage asymmetry of the (±1,±1) direction Fourier peaks further
    • We have investigated the asymmetry of the (±1,±1) direction Fourier peaks upon bias reversal further. We find such asymmetry depends on the detailed quasiparticle dispersion. For example, by setting all the (Formula presented) except (Formula presented) to zero we find the asymmetry disappears. Thus we conclude that we must investigate the issue of the plus/minus bias voltage asymmetry of the (±1,±1) direction Fourier peaks further.
  • 24
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    • S. A. Kivelson (private communication)
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    • For the cuprates the quasiparticles are poorly defined above (Formula presented) Below (Formula presented) they become better-defined, D.L. Feng et al., Science 289, 277 (2000);
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    • Feng, D.L.1


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