Contribution of Quantum-Well States to the RKKY Coupling in Magnetic Multilayers

Barbara A. Jones; C. B. Hanna

doi:10.1103/PhysRevLett.71.4253

Contribution of Quantum-Well States to the RKKY Coupling in Magnetic Multilayers

Barbara A. Jones
, C. B. Hanna

IBM Research - Almaden
IBM Research - Thomas J. Watson Research Center

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

66 Scopus citations

Abstract

We calculate the RKKY coupling between two magnetic layers separated by a nonmagnetic spacer, with scattering potentials added to represent changes in environment between the layers. For the case of a spacer potential well of depth V, the usual π/k F oscillation period is superseded by one much longer, π&hstrok;/ √2mV . For a deep potential well (V&sim;ɛ F ), the RKKY interaction becomes purely ferromagnetic for spacings greater than a few angstroms. Scattering potentials localized at the interfaces produce a phase shift in the RKKY oscillations. We discuss evidence for these effects in experimental systems.

Original language	American English
Article number	4253
Journal	Physical Review Letters
Volume	71
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.71.4253
State	Published - 20 Dec 1993
Externally published	Yes

EGS Disciplines

Physics

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10.1103/PhysRevLett.71.4253

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title = "Contribution of Quantum-Well States to the RKKY Coupling in Magnetic Multilayers",

abstract = " We calculate the RKKY coupling between two magnetic layers separated by a nonmagnetic spacer, with scattering potentials added to represent changes in environment between the layers. For the case of a spacer potential well of depth V, the usual \π/k F oscillation period is superseded by one much longer, \π\&hstrok;/ \√2mV . For a deep potential well (V\&sim;ɛ F ), the RKKY interaction becomes purely ferromagnetic for spacings greater than a few angstroms. Scattering potentials localized at the interfaces produce a phase shift in the RKKY oscillations. We discuss evidence for these effects in experimental systems.",

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language = "American English",

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AU - Jones, Barbara A.

AU - Hanna, C. B.

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N2 - We calculate the RKKY coupling between two magnetic layers separated by a nonmagnetic spacer, with scattering potentials added to represent changes in environment between the layers. For the case of a spacer potential well of depth V, the usual π/k F oscillation period is superseded by one much longer, π&hstrok;/ √2mV . For a deep potential well (V&sim;ɛ F ), the RKKY interaction becomes purely ferromagnetic for spacings greater than a few angstroms. Scattering potentials localized at the interfaces produce a phase shift in the RKKY oscillations. We discuss evidence for these effects in experimental systems.

AB - We calculate the RKKY coupling between two magnetic layers separated by a nonmagnetic spacer, with scattering potentials added to represent changes in environment between the layers. For the case of a spacer potential well of depth V, the usual π/k F oscillation period is superseded by one much longer, π&hstrok;/ √2mV . For a deep potential well (V&sim;ɛ F ), the RKKY interaction becomes purely ferromagnetic for spacings greater than a few angstroms. Scattering potentials localized at the interfaces produce a phase shift in the RKKY oscillations. We discuss evidence for these effects in experimental systems.

UR - https://www.scopus.com/pages/publications/12044250180

U2 - 10.1103/PhysRevLett.71.4253

DO - 10.1103/PhysRevLett.71.4253

M3 - Article

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 25

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ER -

Contribution of Quantum-Well States to the RKKY Coupling in Magnetic Multilayers

Abstract

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