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Volumn 51, Issue 14, 1995, Pages 9208-9218

Vacuum tunneling spectroscopy and asymmetric density of states of Bi2Sr2CaCu2O8+δ

Author keywords

[No Author keywords available]

Indexed keywords


EID: 0000252020     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.51.9208     Document Type: Article
Times cited : (303)

References (82)
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    • For example, E. L. Wolf, Principles of electron tunneling spectroscopy (Oxford University Press, New York, 1985).
  • 6
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    • For example, R. Meservey and B. B. Schwartz, in Superconductivity, edited by R. D. Parks (Dekker, New York, 1969); W. L. McMillan and J. M. Rowell, ibid, and references therein.
  • 8
    • 84927828673 scopus 로고    scopus 로고
    • T. Hasegawa, H, Ikuta, and K. Kitazawa, in Physical Properties of High Temperature Superconductors, edited by D. M. Ginsberg (World Scientific, Singapore 1992), Vol. III, p. 525;
  • 9
    • 84927828672 scopus 로고    scopus 로고
    • P. J. M. van Bentum and H. van Kempen, in Scanning Tunneling Microscopy I, Vol. 20 of Springer Series in Surface Sciences, edited by H.-J. Güntherodt and R. Wiesendanger (Springer-Verlag, Berlin, 1992).
  • 30
    • 84927828671 scopus 로고    scopus 로고
    • Ch. Renner, Ø. Fischer, A. D. Kent, D. B. Mitzi, and A. Kapitulnik, Physica B 194–196, 1689 (1994).
  • 37
    • 84927828670 scopus 로고    scopus 로고
    • A. D. Kent, Ch. Renner, Ph. Niedermann, and Ø. Fischer, Ultramicroscopy 42–44, 1632 (1992). Recent improvements include an in situ sample and tip transfer mechanism.
  • 45
    • 84927828669 scopus 로고    scopus 로고
    • Ch. Renner, Ph.D. thesis No. 2620, University of Geneva, Switzerland, 1993.
  • 51
    • 84927828668 scopus 로고    scopus 로고
    • D. S. Dessau, Stanford University (private communication); M. Onellion, University of Wisconsin (private communication).
  • 57
    • 84927828667 scopus 로고    scopus 로고
    • For example, H. Van Kempen, in Scanning Tunneling Microscopy and Related Methods, Vol. 184 of NATO Advanced Study Institute, Series E: Applied Sciences, edited by R. J. Behm et al. (Kluwer Academic, Dordrecht, 1990), p. 241.
  • 58
    • 84927828666 scopus 로고    scopus 로고
    • For example, K. Kadowaki, T. Mochiku, H. Takeya, Y. Saito, and K. Hirata (unpublished); P. Müller, Physica C 235-240, 289 (1994).
  • 65
    • 84927828665 scopus 로고    scopus 로고
    • The spectra are measured using a digital-to-analogue output from the computer to generate the bias voltage, and an analogue-to-digital input to record the spectra. Thus taking fewer data points over a fixed energy range or increasing the lock-in time constant yields a lower energy resolution, with an experimental broadening of sharp features in the tunneling spectra.
  • 68
    • 84927828664 scopus 로고    scopus 로고
    • Jian Ma, C. Quitmann, R. J. Kelley, P. Alméras, H. Berger, G. Margaritondo, and M. Onellion, Phys. Rev. B (to be published).
  • 72
    • 84927828663 scopus 로고    scopus 로고
    • However, note that this result does not rule out the possibility of a gap in the quasiparticle spectrum above Tc, which contribution would enhance the dip at zero bias due to the normal-state DOS.
  • 74
    • 0001686193 scopus 로고
    • Several papers address the issue of the dip at about -70 meV in the DOS of BSCCO, though without talking about the asymmetry we observe in c-axis STM tunneling spectra. See, for example, Georgios Varelogiannis
    • Several papers address the issue of the dip at about -70 meV in the DOS of BSCCO, though without talking about the asymmetry we observe in c-axis STM tunneling spectra. See, for example, Georgios Varelogiannis, Phys. Rev. B 51, 1381 (1995),
    • (1995) Phys. Rev. B , vol.51 , pp. 1381
  • 75
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    • and references therein.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.