Local electronic and magnetic properties of the doped topological insulators Bi2Se3:Ca and Bi2Te3 : Mn investigated using ion-implanted 8Li β-NMR

Simple item page
dc.contributor.authorMcFadden, RMLen_AU
dc.contributor.authorChatzichristos, Aen_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorFujimoto, Den_AU
dc.contributor.authorSan Hor, Yen_AU
dc.contributor.authorJi, Hen_AU
dc.contributor.authorKarner, VLen_AU
dc.contributor.authorKiefl, RFen_AU
dc.contributor.authorLevy, CDPen_AU
dc.contributor.authorLi, RHen_AU
dc.contributor.authorMcKenzie, Ien_AU
dc.contributor.authorMorris, GDen_AU
dc.contributor.authorPearson, MRen_AU
dc.contributor.authorStachura, Men_AU
dc.contributor.authorCava, RJen_AU
dc.contributor.authorMacFarlane, WAen_AU
dc.date.accessioned2024-02-23T02:59:14Zen_AU
dc.date.available2024-02-23T02:59:14Zen_AU
dc.date.issued2020-12-28en_AU
dc.date.statistics2024-02-23en_AU
dc.description.abstractWe report β-NMR measurements in Bi2Se3:Ca and Bi2Te3:Mn single crystals using Li+8 implanted to depths on the order of 100 nm. Above ∼200K, spin-lattice relaxation reveals diffusion of Li+8, with activation energies of ∼0.4eV (∼0.2eV) in Bi2Se3:Ca (Bi2Te3:Mn). At lower temperatures, the NMR properties are those of a heavily doped semiconductor in the metallic limit, with Korringa relaxation and a small, negative, temperature-dependent Knight shift in Bi2Se3:Ca. From this, we make a detailed comparison with the isostructural tetradymite Bi2Te2Se [McFadden, Phys. Rev. B 99, 125201 (2019)2469-995010.1103/PhysRevB.99.125201]. In the magnetic Bi2Te3:Mn, the effects of the dilute Mn moments predominate, but remarkably the Li+8 signal is not wiped out through the magnetic transition at 13 K, with a prominent critical peak in the spin-lattice relaxation that is suppressed in a high applied field. This detailed characterization of the Li+8 NMR response is an important step toward using depth-resolved β-NMR to study the low-energy properties of the chiral topological surface state in the Bi2Ch3 tetradymite topological insulator. ©2024 American Physical Society.en_AU
dc.description.sponsorshipWe thank R. Abasalti, D. J. Arseneau, S. Daviel, B. Hitti, K. Olchanski, and D. Vyas for their excellent technical support; M. H. Dehn, T. J. Parolin, O. Ofer, Z. Salman, Q. Song, and D. Wang for assistance with early measurements; as well as D. E. MacLaughlin, S. D. Senturia, and A. Wolos for useful discussions. This work was supported by NSERC Discovery grants to R.F.K. and W.A.M. Additionally, R.M.L.M. and A.C. acknowledge support from their NSERC CREATE IsoSiM Fellowships. The crystal growth at Princeton University was supported by the ARO-sponsored MURI on topological insulators, Grant No. W911NF1210461en_AU
dc.identifier.articlenumber235206en_AU
dc.identifier.citationMcFadden, R. M. L., Chatzichristos, A., Cortie, D. L., Fujimoto, D., Hor, Y. S., Ji, H., Karner, V. L., Kiefl, R. F., Levy, C. D. P., Li, R., McKenzie, I., Morris, G. D., Pearson, M. R., Stachura, M., Cava, R. J., & MacFarlane, W. A. (2020). Local electronic and magnetic properties of the doped topological insulators Bi2Se3:Ca and Bi2Te3 : Mn investigated using ion-implanted 8Li β-NMR. Physical Review B, 102(23), 235206. doi:10.1103/PhysRevB.102.235206en_AU
dc.identifier.issn2469-9950en_AU
dc.identifier.issn2469-9969en_AU
dc.identifier.issue23en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.pagination235206-en_AU
dc.identifier.urihttp://dx.doi.org/10.1103/physrevb.102.235206en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15418en_AU
dc.identifier.volume102en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Society (APS)en_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectElectrical insulatorsen_AU
dc.subjectCrystalsen_AU
dc.subjectIon implantationen_AU
dc.subjectDiffusionen_AU
dc.subjectSemiconductor devicesen_AU
dc.subjectSpinen_AU
dc.titleLocal electronic and magnetic properties of the doped topological insulators Bi2Se3:Ca and Bi2Te3 : Mn investigated using ion-implanted 8Li β-NMRen_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.66 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles