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Volumn 70, Issue 21, 2004, Pages 1-13

Influence of higher d-wave gap harmonics on the dynamical magnetic susceptibility of high-temperature superconductors

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CONDUCTANCE; ENERGY; HIGH TEMPERATURE; MAGNETISM; MATHEMATICAL ANALYSIS; NEUTRON SCATTERING; PARAMETER; SPECTRUM; SUPERCONDUCTOR;

EID: 13744261960     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.70.214511     Document Type: Article
Times cited : (24)

References (122)
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    • (1997) Science , vol.275 , pp. 1089
    • Zhang, S.C.1
  • 110
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    • note
    • Here, we follow the interpretation from Ref. 107 that the changes in the superconducting gap as measured by ARPES are intrinsic and not caused by disorder effects.
  • 111
    • 13744263935 scopus 로고    scopus 로고
    • note
    • This observation is contradicted by recent thermal conductivity measurements (Ref. 112). In this study the quasiparticle velocity tangential to the Fermi surface has been extracted in an indirect way by fitting the data with a simple model. However, APRES experiments provide a direct measurement of the gap dispersion, and the decrease of the gap slope with underdoping has now been establish in several independent experiments (Ref. 106-109). These findings are further supported by low-temperature penetration depth measurements (Ref. 113).
  • 114
    • 0000652129 scopus 로고    scopus 로고
    • The YBCO and Bi2212 families are stacked bilayers. One expects that the quasiparticle dispersions close to the Fermi energy split into bonding and antibonding bands. This was first seen in both ARPES and neutron scattering on YBCO. [Refs. 13 and 16; see also M. C. Schabel, C.-H. Park, A. Matsuura, Z.-X. Shen, D. A. Bonn, X. Liang, and W. N. Hardy, Phys. Rev. B 57, 6090 (1998).]. However, in the underdoped and optimally doped regimes the prominent incommensurate and commensurate peaks in the magnetic susceptibility are only observed in the antibonding band. Peaks are observed in the bonding band but they are very broad both as a function of energy and as a function of momentum. Recently a resonant excitation in the even channel was found for overdoped YBCO, albeit with a much smaller intensity than the odd channel resonance (Ref. 16). It seems most likely that the resonance in the bonding band is only present in the overdoped regime and grows in intensity as one increases the doping concentration. Within the fermiology approach it was shown in Ref. 76 (see also Refs. 60, 65, 66, 92, 93, and 96) that an effective one-band model for the antibonding band is sufficient to account for the incommensurate and commensurate peaks in the YBCO and Bi2212 families, if one only considers optimally doped and underdoped samples. We shall adopt the same point of view in this paper.
    • (1998) Phys. Rev. B , vol.57 , pp. 6090
    • Schabel, M.C.1    Park, C.-H.2    Matsuura, A.3    Shen, Z.-X.4    Bonn, D.A.5    Liang, X.6    Hardy, W.N.7
  • 115
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    • cond-mat/0402304 (unpublished)
    • A. V. Chubukov and M. R. Norman, cond-mat/0402304 (unpublished).
    • Chubukov, A.V.1    Norman, M.R.2
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    • note
    • n.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.