Localized surface states in HTSC: Alternative mechanism of zero-bias conductance peaks
K. V. Samokhin, M. B. Walker
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.
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