Modified Magnetism at a Buried <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Co</mi><mi>/</mi><mi>Pd</mi></math></span> Interface Resolved with X-Ray Standing Waves

Sang-Koog Kim; J. B. Kortright

doi:10.1103/PhysRevLett.86.1347

Modified Magnetism at a Buried $Co / Pd$ Interface Resolved with X-Ray Standing Waves

Sang-Koog Kim and J. B. Kortright

Phys. Rev. Lett. 86, 1347 – Published 12 February 2001

Abstract

Soft x-ray standing waves produced by a multilayer interference substrate add depth sensitivity to magnetic circular dichroism to resolve changes in Co magnetism across a 1 nm distance from the Co center to the Co-on-Pd interface of a Pd/Co/Pd trilayer with an in-plane magnetization. Large enhancements of the number of Co $d$ holes, and of in-plane orbital and spin magnetic moments, are strongly localized at a thin, chemically modified interface layer. These results provide new insight into magnetic anisotropy at interfaces, and suggest a broad applicability of such standing wave measurements to interface magnetism studies.

Received 26 January 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.1347

Authors & Affiliations

Sang-Koog Kim^* and J. B. Kortright

Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, One Cyclotron Road, Berkeley, California 94720

^*Current address: Department of Physics and Center for Nanospinics of Spintronic Materials, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea.Electronic address: sangkoog@kaist.ac.kr