Local spectrum of a superconductor as a probe of interactions between magnetic impurities

Michael E. Flatté; David E. Reynolds

doi:10.1103/PhysRevB.61.14810

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Local spectrum of a superconductor as a probe of interactions between magnetic impurities

Michael E. Flatté, David E. Reynolds

DOI 10.1103/PhysRevB.61.14810 · Physical Review B

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Abstract

Qualitative differences in the spectrum of a superconductor near magnetic impurity pairs with moments aligned parallel and antiparallel are derived. A proposal is made for a nonmagnetic scanning tunneling spectroscopy of magnetic impurity interactions based on these differences. Near parallel impurity pairs the midgap localized spin-polarized states associated with each impurity hybridize and form bonding and antibonding molecular states with different energies. For antiparallel impurity moments the states do not hybridize; they are degenerate.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown