A magneto‐reflectivity study of CuInTe2 single crystals

Yakushev, Michael V. and Faugeras, Clement and Mudryi, Alexander V. and Martin, Robert W. (2019) A magneto‐reflectivity study of CuInTe2 single crystals. Physica Status Solidi B. ISSN 0370-1972 (In Press)

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    Abstract

    CuInTe 2 single crystals are studied using optical magneto-reflectance (MR) in magnetic fields B up to 20 T at 4.2 K. The spectra exhibit the A and B free excitons' blue shifting at increasing magnetic fields. Fitting quadratic functions to the experimental dependencies of the exciton spectral energy on B assuming a low field limit allow the determination of diamagnetic shift rates of 8.2 × 10 −5 and 8.5 × 10 −5 eV T −2 for the A and B free excitons, respectively. The excitons' reduced masses of 0.0575m 0 and 0.0568m 0 (m 0 is the free electron mass), Rydbergs of 6.2 and 6.1 meV, and Bohr radii of 10.4 and 10.5 nm are then estimated. An electron effective mass of 0.062m 0 and B sub-band effective hole mass of 0.70m 0 are determined using a literature value of the A valence sub-band hole of 0.78m 0.

    Author(s):Yakushev, Michael V., Faugeras, Clement, Mudryi, Alexander V. and Martin, Robert W. ORCID logoORCID: https://orcid.org/0000-0002-6119-764X
    Item type:Article
    ID code:69479
    Keywords:CuInTe2, excitons, magnetic field, effective masses, Physics, Physics and Astronomy(all)
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Strategic Research Themes > Measurement Science and Enabling Technologies
    Depositing user: Pure Administrator
    Date deposited:23 Aug 2019 10:37
    Last modified:18 Nov 2019 03:26
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/69479
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