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Superconductors of mixed order-parameter symmetry in a Zeeman magnetic field

Haranath Ghosh

DOI 10.1103/PhysRevB.60.3538 · Physical Review B

T1

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Abstract

We study the effect of a Zeeman magnetic field in the superconducting phase with a two-component order-parameter scenario, such as dx2−y2+eiθα, where α=dxy, s. This scenario is equivalent to applying a magnetic field parallel to the Cu-O plane. In a weak magnetic field, which does not cause much change to the predominant d wave, it supresses the minor α component leading to pure d-wave phase. This observation is contrary to the effect of a magnetic field applied in the c direction to the Cu-O planes that are believed to induce a minor component α to d-wave superconductors. We also show that the response of such superconductors to a weak Zeeman magnetic field can be quite different depending on the phase θ of the minor component (α).

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
Bi2Sr2CaCu2O8

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

85Pressure not reportedunknown

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