Localized surface states in high-temperature superconductors: 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 in an external magnetic field.
- Publication:
-
Physical Review B
- Pub Date:
- November 2001
- DOI:
- 10.1103/PhysRevB.64.172506
- arXiv:
- arXiv:cond-mat/0109122
- Bibcode:
- 2001PhRvB..64q2506S
- Keywords:
-
- 74.50.+r;
- 74.20.Rp;
- 74.72.-h;
- Tunneling phenomena;
- point contacts weak links Josephson effects;
- Pairing symmetries;
- Cuprate superconductors;
- Condensed Matter - Superconductivity
- E-Print:
- REVTeX, 4 pages, 2 figs