Out-of-plane impurities induce deviations from the monotonic d-wave superconducting gap of cuprate superconductors

Zhi Wang; Shiping Feng

doi:10.1103/PhysRevB.80.064510

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Out-of-plane impurities induce deviations from the monotonic d-wave superconducting gap of cuprate superconductors

Zhi Wang, Shiping Feng

DOI 10.1103/PhysRevB.80.064510 · Physical Review B

T1

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Abstract

The electronic structure of cuprate superconductors is studied within the kinetic-energy-driven superconducting mechanism in the presence of out-of-plane impurities. With increasing impurity concentration, although both superconducting coherence peaks around the nodal and antinodal regions are suppressed, the position of the leading-edge midpoint of the electron spectrum around the nodal region remains at the same position, whereas around the antinodal region it is shifted toward higher binding energies, this leads to a strong deviation from the monotonic d-wave superconducting gap in the out-of-plane impurity-controlled cuprate superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
(Bi,Pb)2(Sr,La)2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr1.6Ln0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown