Hidden spin-polarized bands in semiconducting 2H-MoTe2

Autor:	R. Oliva, T. Woźniak, F. Dybala, J. Kopaczek, P. Scharoch, R. Kudrawiec
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	transition metal dichalcogenides photoreflectance spin–valley locking density functional theory two-dimensional materials Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 8, Iss 2, Pp 75-81 (2020)
Druh dokumentu:	article
ISSN:	2166-3831 21663831
DOI:	10.1080/21663831.2019.1702113
Popis:	We present experimental and theoretical studies of the electronic band structure of 2H-MoTe2 at high hydrostatic pressures. Photoreflectance measurements allowed the determination of the pressure coefficient of the direct transitions A and B, which are 2.40(3) and −3.42(18) meV/kbar, respectively. We attribute the sign difference to a strong splitting of the conduction bands with increasing pressure and the presence of hidden spin-polarized states in bulk MoTe2. These results provide direct experimental evidence that the spin–valley locking effect takes place in centrosymmetric transition metal dichalcogenides.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/e8318309e7384e68afc13b99e94e8e16 Zobrazit plný text záznamu View record in DOAJ