Spin-polarized resonant surface state in (1 1 1) Sm1−xGdxAl2, a zero-magnetization ferromagnet. (9th October 2018)

• Record Type: Journal Article
• Authors: Bersweiler, M; Dumesnil, K; Fagot-Revurat, Y; Le Fèvre, P; Tiusan, C; Lacour, D; Hehn, M
• Is Part Of: Journal of physics. Volume 30:Number 43(2018)
• Publication Date: 2018-10-09
• Subjects: electronic band structure -- zero-magnetization ferromagnet -- angle- and spin resolved photoemission spectroscopy; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aae341
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The electronic structure of (1 1 1) Sm1− x Gd x Al2, 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 5 d 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− x Gd x Al2 -based spintronic devices.