Fully opposite spin polarization of electron and hole bands in DyN and related band structures of GdN and HoN
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Case Western Reserve Univ., Cleveland, OH (United States); Mahidol Univ., Bangkok (Thailand)
- Case Western Reserve Univ., Cleveland, OH (United States)
Using quasiparticle self-consistent GW calculations, we demonstrate that DyN has an unusual nearly zero indirect gap semimetallic band structure in which the states near the valence band maximum are fully minority spin polarized at Γ while the states near the conduction band minimum (at X) have fully majority spin character. This arises due to a strong hybridization of one of the minority spin f states of dysprosium with the N-2p bands. The reason why only one of the f bands hybridizes is explained using symmetry arguments. Also, we show that in HoN, this hybridization is already strongly reduced because of the deeper Ho-4f minority spin states.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0008933; ER-46874-SC0008933
- OSTI ID:
- 1593463
- Alternate ID(s):
- OSTI ID: 1196444
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 3; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 3 works
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