Observation of a highly spin-polarized topological surface state in GeBi 2Te 4

Okamoto, K.; Kuroda, K.; Miyahara, H.; Miyamoto, K.; Okuda, T.; Aliev, Z.S.; Babanlı , Məhəmməd; Amiraslanov, I.R.; Shimada, K.; Namatame, H.; Taniguchi, M.; Samorokov, D.A.; Menshchikova, T.V.; Chulkov, E.V.; Kimura, A.

doi:10.1103/physrevb.86.195304

Observation of a highly spin-polarized topological surface state in GeBi 2Te 4

Okamoto K., Kuroda K., Miyahara H., Miyamoto K., Okuda T., Aliev Z., ...daha çox

Physical Review B - Condensed Matter and Materials Physics, vol.86, no.19, 2012 (SCI-Expanded, Scopus)

Nəşrin Növü: Article / Article
Cild: 86 Say: 19
Nəşr tarixi: 2012
Doi nömrəsi: 10.1103/physrevb.86.195304
jurnalın adı: Physical Review B - Condensed Matter and Materials Physics
Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Açıq Arxiv Kolleksiyası: Məqalə
Adres: Bəli

Qısa məlumat

Spin polarization of a topological surface state for GeBi 2Te 4, the newly discovered three-dimensional topological insulator, has been studied by means of state-of-the-art spin- and angle-resolved photoemission spectroscopy. It has been revealed that the disorder in the crystal has a minor effect on the surface-state spin polarization, which is 70% near the Dirac point in the bulk energy gap region (∼180 meV). This finding promises not only to realize a highly spin-polarized surface-isolated transport but also to add functionality to its thermoelectric and thermomagnetic properties. © 2012 American Physical Society.