Localized surface states in HTSC: Alternative mechanism of zero-bias conductance peaks

Abstract

It is shown that the quasiparticle states localized in the vicinity of surface imperfections of atomic size can be responsible for the zero-bias tunneling conductance peaks in high-Tc superconductors. The contribution from these states can be easily separated from other mechanisms using their qualitatively different response on an external magnetic field.

REVTeX, 4 pages, 2 figs; to be published in PRB

References in corpus (1)

• Effect of magnetic field on impurity bound states in high-temperature superconductors

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• Zero-bias conductance peak splitting due to multiband effect in tunneling spectroscopy
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• Electrical characterization of YBCO single crystal surfaces oriented in any crystallographic direction