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Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy

Author(s): Crassee, Iris; Martino, E.; Homes, Christopher C.; Caha, Ondřej; Novák, Jiřǐ; et al

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dc.contributor.authorCrassee, Iris-
dc.contributor.authorMartino, E.-
dc.contributor.authorHomes, Christopher C.-
dc.contributor.authorCaha, Ondřej-
dc.contributor.authorNovák, Jiřǐ-
dc.contributor.authorTückmantel, Philippe-
dc.contributor.authorHakl, Michael-
dc.contributor.authorNateprov, Alex A.-
dc.contributor.authorArushanov, Ernest-
dc.contributor.authorGibson, Quinn D.-
dc.contributor.authorCava, Robert Joseph-
dc.contributor.authorKoohpayeh, Seyed Mojtaba-
dc.contributor.authorArpino, Kathryn E.-
dc.contributor.authorMcQueen, Tyrel M.-
dc.contributor.authorOrlita, Milan-
dc.contributor.authorAkrap, Ana-
dc.date.accessioned2020-10-27T18:31:32Z-
dc.date.available2020-10-27T18:31:32Z-
dc.date.issued2018-03-15en_US
dc.identifier.citationCrassee, I., Martino, E., Homes, C.C., Caha, O., Novák, J., Tückmantel, P., Hakl, M., Nateprov, A., Arushanov, E., Gibson, Q.D., Cava, R.J., Koohpayeh, S.M., Arpino, KE, McQueen, T.M., Orlita, M., Akrap, A. (2018). Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy. Physical Review B, 97 (12), 10.1103/PhysRevB.97.125204en_US
dc.identifier.issn2469-9950-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1s80p-
dc.descriptionPhysical Review B. Volume 97, Issue 12, 22 March 2018, Article number 125204.en_US
dc.description.abstract© 2018 American Physical Society. We report the detailed optical properties of Cd3As2 crystals in a wide parameter space: temperature, magnetic field, carrier concentration, and crystal orientation. We investigate high-quality crystals synthesized by three different techniques. In all the studied samples, independently of how they were prepared and how they were treated before the optical experiments, our data indicate conspicuous fluctuations in the carrier density (up to 30%). These charge puddles have a characteristic scale of 100 μm, they become more pronounced at low temperatures, and possibly, they become enhanced by the presence of crystal twinning. The Drude response is characterized by very small scattering rates (∼1 meV) for as-grown samples. Mechanical treatment, such as cutting or polishing, influences the optical properties of single crystals, by increasing the Drude scattering rate and also modifying the high-frequency optical response. Magnetoreflectivity and Kerr rotation are consistent with electronlike charge carriers and a spatially nonuniform carrier density.en_US
dc.format.extent97.12:125204-1 - 125204-9en_US
dc.language.isoenen_US
dc.relation.ispartofPhysical Review Ben_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleNonuniform carrier density in Cd3As2 evidenced by optical spectroscopyen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1103/PhysRevB.97.125204-
dc.date.eissued2018-03-25en_US
dc.identifier.eissn2469-9969-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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