### 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}.

Language | English |
---|---|

Number of pages | 4 |

Journal | Physica Status Solidi B |

DOIs | |

Publication status | Accepted/In press - 13 Aug 2019 |

### Fingerprint

### Keywords

- CuInTe2
- excitons
- magnetic field
- effective masses

### Cite this

_{2}single crystals.

*Physica Status Solidi B*. https://doi.org/10.1002/pssb.201900464

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_{2}single crystals'

*Physica Status Solidi B*. https://doi.org/10.1002/pssb.201900464

**A magneto‐reflectivity study of CuInTe _{2} single crystals.** / Yakushev, Michael V.; Faugeras, Clement; Mudryi, Alexander V.; Martin, Robert W.

Research output: Contribution to journal › Article

TY - JOUR

T1 - A magneto‐reflectivity study of CuInTe2 single crystals

AU - Yakushev, Michael V.

AU - Faugeras, Clement

AU - Mudryi, Alexander V.

AU - Martin, Robert W.

PY - 2019/8/13

Y1 - 2019/8/13

N2 - 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.

AB - 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.

KW - CuInTe2

KW - excitons

KW - magnetic field

KW - effective masses

UR - https://onlinelibrary.wiley.com/journal/15213951

U2 - 10.1002/pssb.201900464

DO - 10.1002/pssb.201900464

M3 - Article

JO - Physica Status Solidi B

T2 - Physica Status Solidi B

JF - Physica Status Solidi B

SN - 0370-1972

ER -

_{2}single crystals. Physica Status Solidi B. 2019 Aug 13. https://doi.org/10.1002/pssb.201900464