Raman scattering study of wurtzite and rocksalt InN under high pressure.

C. Pinquier (1) , François Demangeot (1) , J. Frandon (1) , J.C. Chervin (2) , A. Polian (2) , B. Couzinet (2) , P. Munsch (2) , O. Briot (3) , S. Ruffenach (3) , B. Gil (3) , B. Maleyre (3)

1 Laboratoire Physique des Solides de Toulouse
2 IMPMC - Institut de minéralogie et de physique des milieux condensés
3 GES - Groupe d'étude des semiconducteurs

Indium nitride under high pressure up to 50 GPa was analyzed by means of Raman spectroscopy. The wurtzite to rocksalt phase transition was evidenced at the pressure of 13.5±0.5 GPa and the pressure dependence of vibration modes of both structures was investigated, leading to the determination of linear pressure coefficients and mode Grüneisen parameters. Influence of the pressure dependence of the energy gap on the spectra intensity is also discussed.

C. Pinquier, François Demangeot, J. Frandon, J.C. Chervin, A. Polian, et al.. Raman scattering study of wurtzite and rocksalt InN under high pressure.. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2006, 73, pp.115211. ⟨10.1103/PhysRevB.73.115211⟩. ⟨hal-00022132⟩