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High-pressure lattice dynamics in wurtzite and rocksalt indium nitride investigated by means of Raman spectroscopy

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High-pressure lattice dynamics in wurtzite and rocksalt indium nitride investigated by means of Raman spectroscopy

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dc.contributor.author Ibánez, J. es_ES
dc.contributor.author Oliva, R. es_ES
dc.contributor.author Manjón Herrera, Francisco Javier es_ES
dc.contributor.author Segura, A. es_ES
dc.contributor.author Yamaguchi, T. es_ES
dc.contributor.author Nanishi, Y. es_ES
dc.contributor.author Cuscó, R. es_ES
dc.contributor.author Artús, L. es_ES
dc.date.accessioned 2015-03-20T10:20:44Z
dc.date.available 2015-03-20T10:20:44Z
dc.date.issued 2013-09-05
dc.identifier.issn 1098-0121
dc.identifier.uri http://hdl.handle.net/10251/48142
dc.description.abstract We present an experimental and theoretical lattice-dynamical study of InN at high hydrostatic pressures. We perform Raman scattering measurements on five InN epilayers, with different residual strain and free electron concentrations. The experimental results are analyzed in terms of ab initio lattice-dynamical calculations on both wurtzite InN (w-InN) and rocksalt InN (rs-InN) as a function of pressure. Experimental and theoretical pressure coefficients of the optical modes in w-InN are compared, and the role of residual strain on the measured pressure coefficients is analyzed. In the case of the LO band, we analyze and discuss its pressure behavior considering the double-resonance mechanism responsible for the selective excitation of LO phonons with large wave vectors in w-InN. The pressure behavior of the L− coupled mode observed in a heavily doped n-type sample allows us to estimate the pressure dependence of the electron effective mass in w-InN. The results thus obtained are in good agreement with k⋅p theory. The wurtzite-to-rocksalt phase transition on the upstroke cycle and the rocksalt-to-wurtzite backtransition on the downstroke cycle are investigated, and the Raman spectra of both phases are interpreted in terms of DFT lattice-dynamical calculations. ©2013 American Physical Society es_ES
dc.description.sponsorship Work was supported by the Spanish Ministerio de Economia y Competitividad through Projects MAT2010-16116, MAT2010-21270-C04-04 and MALTA Consolider Ingenio 2010 (CSD2007-00045). en_EN
dc.language Inglés es_ES
dc.publisher American Physical Society es_ES
dc.relation Spanish Ministerio de Economia y Competitividad [MAT2010-16116, MAT2010-21270-C04-04] es_ES
dc.relation MALTA Consolider Ingenio [CSD2007-00045] es_ES
dc.relation.ispartof Physical Review B es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject III-V Nitrides es_ES
dc.subject N-type inp es_ES
dc.subject Scattering es_ES
dc.subject Pseudopotentials es_ES
dc.subject Dependence es_ES
dc.subject Stability es_ES
dc.subject Constants es_ES
dc.subject Charge es_ES
dc.subject Modes es_ES
dc.subject Gan es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title High-pressure lattice dynamics in wurtzite and rocksalt indium nitride investigated by means of Raman spectroscopy es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1103/PhysRevB.88.115202
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Diseño para la Fabricación y Producción Automatizada - Institut de Disseny per a la Fabricació i Producció Automatitzada es_ES
dc.description.bibliographicCitation Ibánez, J.; Oliva, R.; Manjón Herrera, FJ.; Segura, A.; Yamaguchi, T.; Nanishi, Y.; Cuscó, R.... (2013). High-pressure lattice dynamics in wurtzite and rocksalt indium nitride investigated by means of Raman spectroscopy. Physical Review B. 88:115202-1-115202-13. doi:10.1103/PhysRevB.88.115202 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://journals.aps.org/prb/pdf/10.1103/PhysRevB.88.115202 es_ES
dc.description.upvformatpinicio 115202-1 es_ES
dc.description.upvformatpfin 115202-13 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 88 es_ES
dc.relation.senia 255737
dc.identifier.eissn 1550-235X


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