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Volumn 66, Issue 14, 2002, Pages 1-4

Density of states in (formula presented)-wave superconductors disordered by extended impurities

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EID: 85038340193     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.66.140512     Document Type: Article
Times cited : (3)

References (25)
  • 7
    • 85038283052 scopus 로고    scopus 로고
    • Of course, the mechanism for creating low-energy states invoked in the present paper does not specifically require d-wave superconductivity. All that is required is that the pair potential be real (or can be made so by a suitable gauge transformation) and that it possess regions of momentum orientation over which it has opposing signs
    • Of course, the mechanism for creating low-energy states invoked in the present paper does not specifically require d-wave superconductivity. All that is required is that the pair potential be real (or can be made so by a suitable gauge transformation) and that it possess regions of momentum orientation over which it has opposing signs.
  • 9
    • 0033516502 scopus 로고    scopus 로고
    • Similar states have also been observed in the case of native defects in
    • Similar states have also been observed in the case of native defects inE. Hudson, S.H. Pan, A.K. Gupta, K.-W. Ng, and J.C. Davis, Science 285, 88 (1999).
    • (1999) Science , vol.285 , pp. 88
    • Hudson, E.1    Pan, S.H.2    Gupta, A.K.3    Ng, K.-W.4    Davis, J.C.5
  • 16
    • 0000005829 scopus 로고
    • Sov. Phys. JETP 19, 1228 (1964)
    • A.F. Andreev, Zh. Éksp. Teor. Fiz. 46, 1823 1964 [Sov. Phys. JETP 19, 1228 (1964)].
    • (1964) Zh. Éksp. Teor. Fiz. , vol.46 , pp. 1823
    • Andreev, A.F.1
  • 21
    • 85038286797 scopus 로고    scopus 로고
    • Higher-order tunneling matrix elements are small, relative to the leading-order contributions, provided that (formula presented) (Ref. 10), i. e., that the coherence length is small compared with the typical impurity spacing. In addition, we note that, as (formula presented) may be made purely off-diagonal by a suitable unitary transformation, the tunneling amplitude between next-nearest neighbors vanishes identically
    • Higher-order tunneling matrix elements are small, relative to the leading-order contributions, provided that (formula presented) (Ref. 10), i. e., that the coherence length is small compared with the typical impurity spacing. In addition, we note that, as (formula presented) may be made purely off-diagonal by a suitable unitary transformation, the tunneling amplitude between next-nearest neighbors vanishes identically.
  • 22
    • 85038334808 scopus 로고    scopus 로고
    • The related task of computing tunneling corrections to the ground state of a SUSY Hamiltonian having multiple degenerate minima using instanton methods was considered in Ref. 10
    • The related task of computing tunneling corrections to the ground state of a SUSY Hamiltonian having multiple degenerate minima using instanton methods was considered in Ref. 10.
  • 25
    • 85038312522 scopus 로고    scopus 로고
    • We suspect that the result for the DOS presented here will continue to hold not solely in the setting of uncorrelated hopping matrix elements (formula presented) but also for correlations of finite range
    • We suspect that the result for the DOS presented here will continue to hold not solely in the setting of uncorrelated hopping matrix elements (formula presented) but also for correlations of finite range.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.