Abstract
The electronic structure and magnetism of thin films of metastable bcc phase Co(001) consisting of one-, five- and nine-layers is determined by means of all-electron local spin density full potential linearized augmented plane wave (FLAPW) calculations at the lattice constant found for bcc Co stabilized on a GaAs substrate by Prinz. Band structure, surface states, density of states, charge and spin densities and contact hyperfine fields are presented. The center layer of the many-layer films yields a spin magnetic moment of 1.76μB which agrees well with results of bulk calculations for bcc Co. The surface layer has a moment (1.94μB) which is only 10% greater than the bulk value - in sharp contrast to the enhancement found for other transition metal surfaces [35% for Fe(001), 20% for Ni(001) and over 300% for Cr(001)]. Unlike these other transition metal surfaces, even the first layer below the surface layer in Co has the bulk magnetic moment - which indicates that the spin density, like the charge density, shows very short range screening of the surface-vacuum interface.
| Original language | English |
|---|---|
| Pages (from-to) | 93-100 |
| Number of pages | 8 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 62 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1986 |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Electronic structure and magnetism of metastable bcc Co(001). / Lee, J. I.; Fu, C. L.; Freeman, Arthur J.
In: Journal of Magnetism and Magnetic Materials, Vol. 62, No. 1, 1986, p. 93-100.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Electronic structure and magnetism of metastable bcc Co(001)
AU - Lee, J. I.
AU - Fu, C. L.
AU - Freeman, Arthur J
PY - 1986
Y1 - 1986
N2 - The electronic structure and magnetism of thin films of metastable bcc phase Co(001) consisting of one-, five- and nine-layers is determined by means of all-electron local spin density full potential linearized augmented plane wave (FLAPW) calculations at the lattice constant found for bcc Co stabilized on a GaAs substrate by Prinz. Band structure, surface states, density of states, charge and spin densities and contact hyperfine fields are presented. The center layer of the many-layer films yields a spin magnetic moment of 1.76μB which agrees well with results of bulk calculations for bcc Co. The surface layer has a moment (1.94μB) which is only 10% greater than the bulk value - in sharp contrast to the enhancement found for other transition metal surfaces [35% for Fe(001), 20% for Ni(001) and over 300% for Cr(001)]. Unlike these other transition metal surfaces, even the first layer below the surface layer in Co has the bulk magnetic moment - which indicates that the spin density, like the charge density, shows very short range screening of the surface-vacuum interface.
AB - The electronic structure and magnetism of thin films of metastable bcc phase Co(001) consisting of one-, five- and nine-layers is determined by means of all-electron local spin density full potential linearized augmented plane wave (FLAPW) calculations at the lattice constant found for bcc Co stabilized on a GaAs substrate by Prinz. Band structure, surface states, density of states, charge and spin densities and contact hyperfine fields are presented. The center layer of the many-layer films yields a spin magnetic moment of 1.76μB which agrees well with results of bulk calculations for bcc Co. The surface layer has a moment (1.94μB) which is only 10% greater than the bulk value - in sharp contrast to the enhancement found for other transition metal surfaces [35% for Fe(001), 20% for Ni(001) and over 300% for Cr(001)]. Unlike these other transition metal surfaces, even the first layer below the surface layer in Co has the bulk magnetic moment - which indicates that the spin density, like the charge density, shows very short range screening of the surface-vacuum interface.
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U2 - 10.1016/0304-8853(86)90739-0
DO - 10.1016/0304-8853(86)90739-0
M3 - Article
VL - 62
SP - 93
EP - 100
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 1
ER -