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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.
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For example, K. Kadowaki, T. Mochiku, H. Takeya, Y. Saito, and K. Hirata (unpublished); P. Müller, Physica C 235-240, 289 (1994).
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65
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84927828665
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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.
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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.
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74
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0001686193
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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),
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(1995)
Phys. Rev. B
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75
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84927828662
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and references therein.
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