Magnetophonon Effect and Energy Band Parameters of InP

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  • Magnetophonon Effect and Energy Band Pa

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Magnetophonon effect has been studied in the transverse magnetoresistance of high purity epitaxial n-InP at temperatures between 77 and 300 K, by adopting the magnetic field modulation and phase sensitive second harmonic detection technique. Up to the 10th extrema are resolved at 88 K. The band edge effective mass is estimated to be 0.0813±0.001 m at 80 K and 0.0763±0.001 m at 282 K. The temperature dependence of the effective mass is discussed by the k·p perturbation theory and squared momentum matrix element is determined to be Ep=16.6 [eV]. The energy bands of InP throughout the entire Brillouin zone has been calculated by diagonalizing a modified k·p Hamiltonian referred to 30 basis states at k=0 and a reasonable agreement with the present data is obtained.

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