Publication
Physical Review Letters
Paper

Quantum well states as mediators of magnetic coupling in superlattices

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Abstract

Quantum well states are found at the Fermi level in Cu on Co(100) and Ag on Fe(100) using inverse photoemission. They appear every 5.9 0.5 layers in Cu/Co(100), which agrees with the 5.5- to 6-layer oscillation period of the magnetic coupling in Cu/Co(100) superlattices. For Ag/Fe(100) they connect with minority-spin interface states observed below EF previously, providing a magnetic coupling channel through the noble metal. These properties are explained in terms of the bulk band structure. © 1992 The American Physical Society.

Date

03 Aug 1992

Publication

Physical Review Letters

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