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Spin-dependent electron momentum densities in Cu2MnAl studied by Compton scattering
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UNSPECIFIED (1997) Spin-dependent electron momentum densities in Cu2MnAl studied by Compton scattering. JOURNAL OF PHYSICS-CONDENSED MATTER, 9 (49). pp. 10993-11005. ISSN 0953-8984
Full text not available from this repository.Abstract
The spin density in the Heusler alloy Cu2MnAl, has been studied in a Compton scattering experiment with 92 keV circularly polarized synchrotron radiation on the high-energy beamline at ESRF. The conduction electrons were found to have a negative spin polarization of 0.4 mu(B) which is at variance with the deduction of a positive moment from earlier neutron data; neither was any evidence found for a 3d spin moment on the copper site. The spin moment on the Mn site at room temperature was determined as 3.25 mu(B), which is in agreement with neutron data. The spin-dependent Compton profiles for the [100], [110] and [111] directions, reported here, show anisotropy in the momentum density which is in good agreement with new KKR calculations based on a ferromagnetic ground state. By combining charge-and spin-dependent Compton data the momentum space anisotropies in the majority and minority bands have been analysed. Both the majority and minority spin densities are anisotropic.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Journal or Publication Title: | JOURNAL OF PHYSICS-CONDENSED MATTER |
| Publisher: | IOP PUBLISHING LTD |
| ISSN: | 0953-8984 |
| Date: | 8 December 1997 |
| Volume: | 9 |
| Number: | 49 |
| Number of Pages: | 13 |
| Page Range: | pp. 10993-11005 |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/16157 |
Data sourced from Thomson Reuters' Web of Knowledge
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