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Volumn 73, Issue 20, 1998, Pages 2992-2994

Vacuum tunneling of superconducting quasiparticles from atomically sharp scanning tunneling microscope tips

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON TUNNELING; ELECTRONIC DENSITY OF STATES; ENERGY GAP; JOSEPHSON JUNCTION DEVICES; SUPERCONDUCTING MATERIALS;

EID: 0032538729     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.122654     Document Type: Article
Times cited : (153)

References (20)
  • 13
    • 21944443755 scopus 로고    scopus 로고
    • note
    • All differential conductance spectra measurements in this experiment were performed using a lock-in technique with a modulation amplitude of 50 μV. The junction resistance was set to 100 M at a bias voltage of 8 mV (well outside the superconducting energy gap).
  • 17
    • 21944440980 scopus 로고    scopus 로고
    • private communication. One of the signatures of the proximity effect is the appearance of two dips directly outside of the peaks at each side of the gap edge. In SS tunneling this can be seen more clearly because there will be no thermal smearing due to a normal state electrode [as evidenced in Fig. 4(a)]. One can also approximately simulate SS tunneling effects by convoluting a SN tunneling curve with itself. Self-convolutions of both the data in Figs. 1(b) and 2(a) show such dips, whereas the self-convolution of the data in Fig. 4(b) does not. This indicates that the proximity effect is indeed only in the tip.
    • J. F. Zasadzinski (private communication). One of the signatures of the proximity effect is the appearance of two dips directly outside of the peaks at each side of the gap edge. In SS tunneling this can be seen more clearly because there will be no thermal smearing due to a normal state electrode [as evidenced in Fig. 4(a)]. One can also approximately simulate SS tunneling effects by convoluting a SN tunneling curve with itself. Self-convolutions of both the data in Figs. 1(b) and 2(a) show such dips, whereas the self-convolution of the data in Fig. 4(b) does not. This indicates that the proximity effect is indeed only in the tip.
    • Zasadzinski, J.F.1
  • 18
    • 0003801478 scopus 로고
    • Principles of Electron Tunneling Spectroscopy
    • Oxford University Press, New York
    • E. L. Wolf, Principles of Electron Tunneling Spectroscopy, International series of monographs on physics, Vol. 71 (Oxford University Press, New York, 1985), p. 105.
    • (1985) International Series of Monographs on Physics , vol.71 , pp. 105
    • Wolf, E.L.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.