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Volumn 66, Issue 21, 2002, Pages 1-5

Fermi-liquid interactions and the superfluid density in (formula presented)-wave superconductors

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EID: 84881121270     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.66.214517     Document Type: Article
Times cited : (5)

References (35)
  • 20
    • 85038306520 scopus 로고    scopus 로고
    • (unpublished), uses a different approach to anisotropic SFLT combining a microscopic Hartree-Fock-type theory with the Landau functional for QP’s. We are unable to make direct contact with his results, which differ from ours, but believe our approach to be more general; see Ref. 24
    • M.B. Walkerand (unpublished), uses a different approach to anisotropic SFLT combining a microscopic Hartree-Fock-type theory with the Landau functional for QP’s. We are unable to make direct contact with his results, which differ from ours, but believe our approach to be more general; see Ref. 24.
    • Walker, M.B.1
  • 25
    • 85038313142 scopus 로고    scopus 로고
    • The question of an underlying “normal” FL in the cuprates at low temperatures is a difficult one. Experimentally, magnetic fields which destroy superconductivity at low T in some underdoped cuprates seem to lead to an insulating state. However, fields and temperatures that destroy superconductivity might well induce fluctuations of the SC order parameter which destroy coherent QP’s. From a theoretical point of view also the separation of the original interaction into a correlation term and a pairing term poses issues beyond the scope of this work, and we make no attempt to address them here
    • The question of an underlying “normal” FL in the cuprates at low temperatures is a difficult one. Experimentally, magnetic fields which destroy superconductivity at low T in some underdoped cuprates seem to lead to an insulating state. However, fields and temperatures that destroy superconductivity might well induce fluctuations of the SC order parameter which destroy coherent QP’s. From a theoretical point of view also the separation of the original interaction into a correlation term and a pairing term poses issues beyond the scope of this work, and we make no attempt to address them here.
  • 30
    • 85038304348 scopus 로고    scopus 로고
    • For electrons with a density-density interaction the diamagnetic term may be obtained by shifting (formula presented) and computing the energy to (formula presented) This is, however, not valid for QP’s, since the Landau interaction function (in the isotropic limit) also includes terms of the form (formula presented) which resembles a “current-current” interaction. Such effects are apparently ignored in the approach of Ref. 16
    • For electrons with a density-density interaction the diamagnetic term may be obtained by shifting (formula presented) and computing the energy to (formula presented) This is, however, not valid for QP’s, since the Landau interaction function (in the isotropic limit) also includes terms of the form (formula presented) which resembles a “current-current” interaction. Such effects are apparently ignored in the approach of Ref. 16.
  • 32
    • 0032498772 scopus 로고    scopus 로고
    • The problem with (formula presented) and the slope (formula presented) in disagreement with experiments has also been pointed out within certain microscopic approaches by
    • The problem with (formula presented) and the slope (formula presented) in disagreement with experiments has also been pointed out within certain microscopic approaches by X.-G. Wen and P.A. Lee, Phys. Rev. Lett. 80, 2193 (1998);
    • (1998) Phys. Rev. Lett. , vol.80 , pp. 2193
    • Wen, X.-G.1    Lee, P.A.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.