Year: 1997
Type: article
Abstract: Theoretical results for the $\mathrm{ab}$-plane tunneling conductance in the $d$-wave model for high- ${T}_{c}$ superconductors are presented. The $d$-wave model predicts surface bound states below the maximum gap. A subdominant order parameter, stabilized by the surface, leads to a splitting of the zero-bias conductance peak (ZBCP) in zero external field and to spontaneous surface currents. In a magnetic field, screening currents shift the bound state spectrum, leading to a splitting of the ZBCP that is linear in $H$ at low fields and saturates at a pair breaking critical field of order ${H}_{c}^{*}\ensuremath{\simeq}3\mathrm{T}$.
Source: Physical Review Letters
Authors: M. Fogelström, D. Rainer, J. A. Sauls
Institutions: Northwestern University, University of Bayreuth
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2091022212