Spin-polarized resonant surface state in (1 1 1) Sm1−xGdxAl2, a zero-magnetization ferromagnet

The electronic structure of (1 1 1) Sm1−xGdxAl2, a zero-magnetization ferromagnet, is investigated by angle- and spin- resolved photoemission spectroscopy. An intense electron pocket strongly localized around and close to the Fermi level is observed and analyzed in detail. Its various characteristic...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2018-10, Vol.30 (43)
Main Authors: Bersweiler, M, Dumesnil, K, Fagot-Revurat, Y, Le Fèvre, P, Tiusan, C, Lacour, D, Hehn, M
Format: Article
Language:English
Subjects:
angle- and spin resolved photoemission spectroscopy
electronic band structure
zero-magnetization ferromagnet
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Summary:The electronic structure of (1 1 1) Sm1−xGdxAl2, a zero-magnetization ferromagnet, is investigated by angle- and spin- resolved photoemission spectroscopy. An intense electron pocket strongly localized around and close to the Fermi level is observed and analyzed in detail. Its various characteristics, combined with electronic structure calculations, reveal a resonant surface state of 5d character and Λ1 symmetry, likely built on bulk states developing around L points. It exhibits moreover a low temperature positive spin polarization at the Fermi level, of strong interest for spin-dependent transport properties in Sm1−xGdxAl2-based spintronic devices.
ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/aae341