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| Hauptseite > Publikationsdatenbank > Nondegenerate valleys in the half-metallic ferromagnet Fe / WS 2 > print |
| Hauptseite > Publikationsdatenbank > Nondegenerate valleys in the half-metallic ferromagnet Fe / WS 2 > print |
| 001 | 842699 | ||
| 005 | 20230426083155.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevB.97.035404 |2 doi |
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| 024 | 7 | _ | |a 2469-9950 |2 ISSN |
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| 100 | 1 | _ | |a Messaoudi, Omar |0 P:(DE-Juel1)171356 |b 0 |e Corresponding author |u fzj |
| 245 | _ | _ | |a Nondegenerate valleys in the half-metallic ferromagnet Fe / WS 2 |
| 260 | _ | _ | |a Woodbury, NY |c 2018 |b Inst. |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a We present a first-principles investigation of the electronic properties of monolayer WS2 coated with an overlayer of Fe. Our ab initio calculations reveal that the system is a half-metallic ferromagnet with a gap of ∼1 eV for the majority spin channel. Furthermore, the combined effect of time-reversal symmetry breaking due to the magnetic Fe overlayer and the large spin-orbit coupling induced by W gives rise to nondegenerate K and K′ valleys. This has a tremendous impact on the excited-state properties induced by externally applied circularly polarized light. Our analysis demonstrates that the latter induces a singular hot-spot structure of the transition probability around the K and K′ valleys for right and left circular polarization, respectively. We trace back the emergence of this remarkable effect to the strong momentum dependent spin-noncollinearity of the valence band involved. As a main consequence, a strong valley-selective magnetic circular dichroism is obtained, making this system a prime candidate for spintronics and photonics applications. |
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| 536 | _ | _ | |a Calculation of quantum spin-fluctuations in nano-magnets (jias19_20161101) |0 G:(DE-Juel1)jias19_20161101 |c jias19_20161101 |f Calculation of quantum spin-fluctuations in nano-magnets |x 1 |
| 542 | _ | _ | |i 2018-01-03 |2 Crossref |u https://link.aps.org/licenses/aps-default-license |
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| 773 | 1 | 8 | |a 10.1103/physrevb.97.035404 |b American Physical Society (APS) |d 2018-01-03 |n 3 |p 035404 |3 journal-article |2 Crossref |t Physical Review B |v 97 |y 2018 |x 2469-9950 |
| 773 | _ | _ | |a 10.1103/PhysRevB.97.035404 |g Vol. 97, no. 3, p. 035404 |0 PERI:(DE-600)2844160-6 |n 3 |p 035404 |t Physical review / B |v 97 |y 2018 |x 2469-9950 |
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