The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance

M V Yakushev; M A Sulimov; C Faugeras; A V Mudryi; R W Martin

doi:10.1088/1361-6463/ab6f1a

The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance

M V Yakushev, M A Sulimov, C Faugeras, A V Mudryi, R W Martin

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Abstract

High structural quality single crystals of CuGaSe2 were studied using photoluminescence (PL), optical reflectivity (OR) and circularly polarised magneto-reflectance (MR) at 4.2K in magnetic fields B up to 14 T. At B = 0 T both the PL and OR spectra exhibited the A free exciton, associated with the uppermost sub-band of the valence band of CuGaSe2 split by the tetragonal distortion in the lattice. The magnetic field induced a blue shift of the exciton in the MR spectra. Analysis of the dependence of the spectral position of the A exciton on B in the MR spectra, measured for both right and left circular polarisations of light, enabled the magnitude of its effective g-factor to be determined |g| = 0.46.

Original language	English
Article number	17LT02
Number of pages	4
Journal	Journal of Physics D: Applied Physics
Volume	53
Issue number	17
DOIs	https://doi.org/10.1088/1361-6463/ab6f1a
Publication status	Published - 19 Feb 2020

Keywords

CuGaSe2
photoluminescence
PL
optical reflectivity
semiconductors
optical spectroscopy
magnetic fields

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10.1088/1361-6463/ab6f1a

Yakushev-etal-JPD-2020-The-g-factor-of-CuGaSe2-studied-by-circularly-polarised-magneto-reflectanceAccepted author manuscript, 589 KBLicence: CC BY-NC-ND 4.0

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title = "The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance",

abstract = "High structural quality single crystals of CuGaSe2 were studied using photoluminescence (PL), optical reflectivity (OR) and circularly polarised magneto-reflectance (MR) at 4.2K in magnetic fields B up to 14 T. At B = 0 T both the PL and OR spectra exhibited the A free exciton, associated with the uppermost sub-band of the valence band of CuGaSe2 split by the tetragonal distortion in the lattice. The magnetic field induced a blue shift of the exciton in the MR spectra. Analysis of the dependence of the spectral position of the A exciton on B in the MR spectra, measured for both right and left circular polarisations of light, enabled the magnitude of its effective g-factor to be determined |g| = 0.46.",

keywords = "CuGaSe2, photoluminescence, PL, optical reflectivity, semiconductors, optical spectroscopy, magnetic fields",

author = "Yakushev, {M V} and Sulimov, {M A} and C Faugeras and Mudryi, {A V} and Martin, {R W}",

year = "2020",

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doi = "10.1088/1361-6463/ab6f1a",

language = "English",

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journal = "Journal of Physics D: Applied Physics",

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T1 - The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance

AU - Yakushev, M V

AU - Sulimov, M A

AU - Faugeras, C

AU - Mudryi, A V

AU - Martin, R W

PY - 2020/2/19

Y1 - 2020/2/19

N2 - High structural quality single crystals of CuGaSe2 were studied using photoluminescence (PL), optical reflectivity (OR) and circularly polarised magneto-reflectance (MR) at 4.2K in magnetic fields B up to 14 T. At B = 0 T both the PL and OR spectra exhibited the A free exciton, associated with the uppermost sub-band of the valence band of CuGaSe2 split by the tetragonal distortion in the lattice. The magnetic field induced a blue shift of the exciton in the MR spectra. Analysis of the dependence of the spectral position of the A exciton on B in the MR spectra, measured for both right and left circular polarisations of light, enabled the magnitude of its effective g-factor to be determined |g| = 0.46.

AB - High structural quality single crystals of CuGaSe2 were studied using photoluminescence (PL), optical reflectivity (OR) and circularly polarised magneto-reflectance (MR) at 4.2K in magnetic fields B up to 14 T. At B = 0 T both the PL and OR spectra exhibited the A free exciton, associated with the uppermost sub-band of the valence band of CuGaSe2 split by the tetragonal distortion in the lattice. The magnetic field induced a blue shift of the exciton in the MR spectra. Analysis of the dependence of the spectral position of the A exciton on B in the MR spectra, measured for both right and left circular polarisations of light, enabled the magnitude of its effective g-factor to be determined |g| = 0.46.

KW - CuGaSe2

KW - photoluminescence

KW - PL

KW - optical reflectivity

KW - semiconductors

KW - optical spectroscopy

KW - magnetic fields

U2 - 10.1088/1361-6463/ab6f1a

DO - 10.1088/1361-6463/ab6f1a

M3 - Article

VL - 53

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

SN - 0022-3727

IS - 17

M1 - 17LT02

ER -

The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance

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Keywords

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