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Electronic structure of RSb (R = Y, Ce, Gd, Dy, Ho, Tm, Lu) studied by angle-resolved photoemission spectroscopy

TitleElectronic structure of RSb (R = Y, Ce, Gd, Dy, Ho, Tm, Lu) studied by angle-resolved photoemission spectroscopy
Publication TypeJournal Article
Year of Publication2017
AuthorsWu, Y, Lee, Y, Kong, T, Mou, DX, Jiang, R, Huang, LA, Bud'ko, SL, Canfield, PC, Kaminski, A
JournalPhysical Review B
Volume96
Pagination035134
Date Published07
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000405876600001
Keywordsdiagram, dirac semimetal cd3as2, fermi-surface, giant, lasb, magnetic-properties, magnetoresistance, mobility, phase-transition, physics, pnictides, single-crystals
Abstract

, the unit cell of different rare-earth monoantimonides shrinks when changing the rare-earth ion from CeSb to LuSb. This results in the differences in the chemical potentials in these compounds, which are demonstrated by both ARPES measurements and electronic structure calculations. Interestingly, in CeSb, the intersecting electron pockets at the X point seem to be touching the valence bands, forming a fourfold-degenerate Dirac-like feature. On the other hand, the remaining rare-earth monoantimonides show significant gaps between the upper and lower bands at the X point. Furthermore, similar to the previously reported results of LaBi, a Dirac-like structure was observed at the Gamma point in YSb, CeSb, and GdSb, compounds showing relatively high magnetoresistance. This Dirac-like structure may contribute to the unusually large magnetoresistance in these compounds.

DOI10.1103/PhysRevB.96.035134
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Complex States