Theoretical Magnon Dispersion Curves for Gd

Per-Anker Lindgård; B. N. Harmon; A. J. Freeman

doi:10.1103/PhysRevLett.35.383

Theoretical Magnon Dispersion Curves for Gd

Per-Anker Lindgård, B. N. Harmon, A. J. Freeman

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The magnon dispersion curve of Gd metal has been determined from first principles by use of augmented-plane-wave energy bands and wave functions. The exchange matrix elements I(k⃗, k⃗′) between the 4f electrons and the conduction electrons from the first six energy bands were calculated under the assumption of an unscreened Coulomb interaction. The results are in good overall agreement with experiment provided the I(k⃗, k⃗′) are diminished by a constant scale factor of about 2 which may be caused by screening.

Original language	English
Journal	Physical Review Letters
Volume	35
Issue number	6
Pages (from-to)	383-386
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.35.383
Publication status	Published - 1975

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title = "Theoretical Magnon Dispersion Curves for Gd",

abstract = "The magnon dispersion curve of Gd metal has been determined from first principles by use of augmented-plane-wave energy bands and wave functions. The exchange matrix elements I(k⃗, k⃗′) between the 4f electrons and the conduction electrons from the first six energy bands were calculated under the assumption of an unscreened Coulomb interaction. The results are in good overall agreement with experiment provided the I(k⃗, k⃗′) are diminished by a constant scale factor of about 2 which may be caused by screening.",

author = "Per-Anker Lindg{\aa}rd and Harmon, {B. N.} and Freeman, {A. J.}",

year = "1975",

doi = "10.1103/PhysRevLett.35.383",

language = "English",

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pages = "383--386",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Theoretical Magnon Dispersion Curves for Gd

AU - Lindgård, Per-Anker

AU - Harmon, B. N.

AU - Freeman, A. J.

PY - 1975

Y1 - 1975

N2 - The magnon dispersion curve of Gd metal has been determined from first principles by use of augmented-plane-wave energy bands and wave functions. The exchange matrix elements I(k⃗, k⃗′) between the 4f electrons and the conduction electrons from the first six energy bands were calculated under the assumption of an unscreened Coulomb interaction. The results are in good overall agreement with experiment provided the I(k⃗, k⃗′) are diminished by a constant scale factor of about 2 which may be caused by screening.

AB - The magnon dispersion curve of Gd metal has been determined from first principles by use of augmented-plane-wave energy bands and wave functions. The exchange matrix elements I(k⃗, k⃗′) between the 4f electrons and the conduction electrons from the first six energy bands were calculated under the assumption of an unscreened Coulomb interaction. The results are in good overall agreement with experiment provided the I(k⃗, k⃗′) are diminished by a constant scale factor of about 2 which may be caused by screening.

U2 - 10.1103/PhysRevLett.35.383

DO - 10.1103/PhysRevLett.35.383

M3 - Journal article

SN - 0031-9007

VL - 35

SP - 383

EP - 386

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

ER -

Theoretical Magnon Dispersion Curves for Gd

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