Raman scattering study of InAs nanowires under high pressure (Articolo in rivista)

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Label
  • Raman scattering study of InAs nanowires under high pressure (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0957-4484/25/46/465704 (literal)
Alternative label
  • Majumdar, Dipanwita[ 1 ] ; Basu, Abhisek[ 2 ] ; Mukherjee, Goutam Dev[ 2 ] ; Ercolani, Daniele[ 3,4 ] ; Sorba, Lucia[ 3,4 ] ; Singha, Achintya[ 1 ] (2014)
    Raman scattering study of InAs nanowires under high pressure
    in Nanotechnology (Bristol, Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Majumdar, Dipanwita[ 1 ] ; Basu, Abhisek[ 2 ] ; Mukherjee, Goutam Dev[ 2 ] ; Ercolani, Daniele[ 3,4 ] ; Sorba, Lucia[ 3,4 ] ; Singha, Achintya[ 1 ] (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84909983262&partnerID=q2rCbXpz (literal)
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  • 25 (literal)
Rivista
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  • 46 (literal)
Note
  • Scopu (literal)
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  • [ 1 ] Bose Inst, Dept Phys, Kolkata 700009, India [ 2 ] Indian Inst Sci Educ & Res, Dept Phys Sci, Kolkata 741246, India [ 3 ] CNR, Ist Nanosci, NEST, I-56127 Pisa, Italy [ 4 ] Scuola Normale Super Pisa, I-56127 Pisa, Italy (literal)
Titolo
  • Raman scattering study of InAs nanowires under high pressure (literal)
Abstract
  • The pressure-dependent phonon modes of InAs nanowires have been investigated by Raman spectroscopy under high pressure up to ~58 GPa. X-ray diffraction measurements show that InAs nanowires at 21 GPa exhibit a phase transition from a wurtzite to an orthorhombic crystal structure, with a corresponding drastic change in the first-order Raman spectra. In the low-pressure regime, a linear increase in phonon frequencies is observed, whereas splitting between longitudinal and transversal optical phonon modes decreases as a function of applied pressure. The calculated mode Grüneisen parameters and Born's transverse effective charge indicate that the wurtzite InAs nanowires exhibit a more covalent nature under compression. (literal)
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