Role of the nonmagnetic layer in determining the Landé g -factor in a spin-transfer system

J. S. Lee; E. Vescovo; C. C. Kao; J. M. Beaujour; A. D. Kent; H. Jang; J. Y. Kim; J. H. Park; J. H. Shim

doi:10.1103/PhysRevB.80.180403

Role of the nonmagnetic layer in determining the Landé g -factor in a spin-transfer system

J. S. Lee, E. Vescovo, C. C. Kao, J. M. Beaujour, A. D. Kent, H. Jang, J. Y. Kim, J. H. Park, J. H. Shim

Research output: Contribution to journal › Article › peer-review

Abstract

The microscopic origin of the Landé g -factor in two ferromagnetic/nonmagnetic (FM/NM) bilayer systems-Co/Cu and Ni/Pd-has been investigated using x-ray magnetic circular dichroism, resonant magnetic reflectivity, and band calculations. The FM/NM bilayer represents the building block of any complete spin-transfer structure (FM1/NM/FM2). The valence electronic structure is profoundly altered over a finite length across the FM/NM interface. A considerable charge transfer takes place from the NM to the FM material. This results in an enhancement of the orbital-to-spin magnetic moment ratio in the FM layer and an induced magnetic polarization in the NM layer. Both effects turn out to be crucial for a correct understanding of the g -factor in spin-transfer systems.

Original language	English (US)
Article number	180403
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.80.180403
State	Published - Nov 2 2009

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.80.180403

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title = "Role of the nonmagnetic layer in determining the Land{\'e} g -factor in a spin-transfer system",

abstract = "The microscopic origin of the Land{\'e} g -factor in two ferromagnetic/nonmagnetic (FM/NM) bilayer systems-Co/Cu and Ni/Pd-has been investigated using x-ray magnetic circular dichroism, resonant magnetic reflectivity, and band calculations. The FM/NM bilayer represents the building block of any complete spin-transfer structure (FM1/NM/FM2). The valence electronic structure is profoundly altered over a finite length across the FM/NM interface. A considerable charge transfer takes place from the NM to the FM material. This results in an enhancement of the orbital-to-spin magnetic moment ratio in the FM layer and an induced magnetic polarization in the NM layer. Both effects turn out to be crucial for a correct understanding of the g -factor in spin-transfer systems.",

author = "Lee, {J. S.} and E. Vescovo and Kao, {C. C.} and Beaujour, {J. M.} and Kent, {A. D.} and H. Jang and Kim, {J. Y.} and Park, {J. H.} and Shim, {J. H.}",

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doi = "10.1103/PhysRevB.80.180403",

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AU - Lee, J. S.

AU - Vescovo, E.

AU - Kao, C. C.

AU - Beaujour, J. M.

AU - Kent, A. D.

AU - Jang, H.

AU - Kim, J. Y.

AU - Park, J. H.

AU - Shim, J. H.

PY - 2009/11/2

Y1 - 2009/11/2

N2 - The microscopic origin of the Landé g -factor in two ferromagnetic/nonmagnetic (FM/NM) bilayer systems-Co/Cu and Ni/Pd-has been investigated using x-ray magnetic circular dichroism, resonant magnetic reflectivity, and band calculations. The FM/NM bilayer represents the building block of any complete spin-transfer structure (FM1/NM/FM2). The valence electronic structure is profoundly altered over a finite length across the FM/NM interface. A considerable charge transfer takes place from the NM to the FM material. This results in an enhancement of the orbital-to-spin magnetic moment ratio in the FM layer and an induced magnetic polarization in the NM layer. Both effects turn out to be crucial for a correct understanding of the g -factor in spin-transfer systems.

AB - The microscopic origin of the Landé g -factor in two ferromagnetic/nonmagnetic (FM/NM) bilayer systems-Co/Cu and Ni/Pd-has been investigated using x-ray magnetic circular dichroism, resonant magnetic reflectivity, and band calculations. The FM/NM bilayer represents the building block of any complete spin-transfer structure (FM1/NM/FM2). The valence electronic structure is profoundly altered over a finite length across the FM/NM interface. A considerable charge transfer takes place from the NM to the FM material. This results in an enhancement of the orbital-to-spin magnetic moment ratio in the FM layer and an induced magnetic polarization in the NM layer. Both effects turn out to be crucial for a correct understanding of the g -factor in spin-transfer systems.

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Role of the nonmagnetic layer in determining the Landé g -factor in a spin-transfer system

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