Resolving the order parameter of High-T${}_c$ Superconductors through quantum pumping spectroscopy

Abstract

The order parameter of High-T${}_c$ superconductors through a series of experiments has been quite conclusively demonstrated to not be of the normal $s-wave$ type. It is either a pure $d_{x^2-y^2}$-wave type or a mixture of a $d_{x^2-y^2}-wave$ with a small imaginary $s-wave$ or $d_{xy}-wave$ component. In this work a distinction is brought out among the four types, i.e., $s-wave$, $d_{x^2-y^2}-wave$, $d_{x^2-y^2}+is-wave$ and $d_{x^2-y^2}+i{d}_{xy}-wave$ types with the help of quantum pumping spectroscopy. This involves a normal metal double barrier structure in contact with a High-T${}_c$ superconductor. The pumped current, heat and noise show different characteristics with change in order parameter revealing quite easily the differences among these.

11 pages, 3 figures, 1 table, Manuscript revised with new material on d+id' case

References in corpus (6)

• Andreev - Saint James reflections: a probe of cuprate superconductors
• Floquet scattering theory for current and heat noise in large amplitude adiabatic pumps
• Quantum spin pumping with adiabatically modulated magnetic barrier's
• Adiabatic spin pumping through a quantum dot with a single orbital level
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Cited by in corpus (2)

• Nonlocal pure spin current injection via quantum pumping and crossed Andreev reflection
• Characterizing a high spin magnetic impurity via Andreev reflection spectroscopy