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Title: Photoelectron spectroscopy of manganese-based Heusler alloys
Authors: Brown, D.
Cropper, Michael D.
Bedwell, K.H.
Butterfield, M.T.
Guilfoyle, S.J.
Malins, A.E.R.
Petty, M.
Issue Date: 1998
Publisher: © American Physical Society
Citation: BROWN, D. ... et al, 1998. Photoelectron spectroscopy of manganese-based Heusler alloys. Physical Review B, 57(3), pp.1563–1571.
Abstract: Ultraviolet-photoemission spectroscopy has been employed to investigate the valence-band electronic structures of the magnetic alloys Co2MnSn, Cu2MnAl, and Pd2MnSn.The valence band of Co2MnSn extends to approximately 5 eV below the Fermi level with a high density of states immediately below the Fermi edge. Cu2MnAl and Pd2MnSn have valence-band widths of 6 and 7 eV, respectively, with the highest density of states lying some 3 eV below the Fermi level in each case. Photoemission measurements in the region of the Mn 3p threshold indicate that Mn 3d character extends across the full width of the valence band for all three alloys. For Pd2MnSn, additional photoemission measurements in the region of the Pd 4d Cooper minimum confirm this conclusion. Modulations in photocurrent resulting from Mn 3p-to-3d resonances across the valence band of Co2MnSn are most intense towards the bottom of the band. This is discussed in terms of possible variations in initial-state hybridization. The experimental photoemission spectra are compared with calculated spectra derived from theoretical band structures. Although there are some differences in shape, the bandwidths of the calculated spectra agree very well with the experimental results.
Description: This article was publsihed in the journal, Physical Review B [© American Physical Society]. It is also available at: http://link.aps.org/abstract/PRB/v57/p1563.
URI: https://dspace.lboro.ac.uk/2134/1726
ISSN: 0163-1829
Appears in Collections:Published Articles (Physics)

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