Pressure dependence of Raman spectrum in InAs nanowires
| Autor: | Ilaria Zardo, Paolo Postorino, Simon Hertenberger, Gregor Koblmüller, Stefanie Morkötter, Sara Yazji, Gerhard Abstreiter |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Phonon Surface Properties Nanowire Spectrum Analysis Raman Indium Arsenicals Phase Transition high pressure InAs nanowires Raman spectroscopy wurtzite Condensed Matter Physics Materials Science (all) Medicine (all) symbols.namesake Tetragonal crystal system Condensed Matter::Materials Science Lattice (order) Pressure General Materials Science Electronic band structure Wurtzite crystal structure Condensed matter physics Condensed Matter::Other Nanowires Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Models Chemical symbols Phonons Crystallization Raman scattering |
| Zdroj: | Journal of physics. Condensed matter 26 (2014). doi:10.1088/0953-8984/26/23/235301 info:cnr-pdr/source/autori:Yazji, Sara; Zardo, Ilaria; Hertenberger, Simon; Morktter, Stefanie; Koblmueller, Gregor; Abstreiter, Gerhard; Postorino, Paolo/titolo:Pressure dependence of Raman spectrum in InAs nanowires/doi:10.1088%2F0953-8984%2F26%2F23%2F235301/rivista:Journal of physics. Condensed matter (Print)/anno:2014/pagina_da:/pagina_a:/intervallo_pagine:/volume:26 |
| ISSN: | 1361-648X |
| DOI: | 10.1088/0953-8984/26/23/235301 |
| Popis: | We report on a Raman scattering experiment under high pressure on InAs nanowires with mainly wurtzite crystal structure. The dependence of the phonon modes on applied pressure due to the modification of the lattice parameters has been determined along with the transverse dynamical charge. Contrary to bulk InAs, no structural transition to rock salt phase has been observed in the investigated pressure range, while an anomalous behavior of the full-width at half-maximum has been noted. Our data suggest that wurtzite InAs NWs go through a tetragonal intermediate phase. Furthermore, the resonance profile of the phonon modes as a function of the applied pressure has been investigated, giving insights into the band structure of wurtzite InAs. |
| Databáze: | OpenAIRE |
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