First-principles study on electronic and elastic properties of BN, AlN, and GaN

Kazuhiro Shimada, Takayuki Sota, Katsuo Suzuki

    Research output: Contribution to journalArticle

    271 Citations (Scopus)

    Abstract

    We have carried out first-principles total energy calculations to investigate electronic and elastic properties of both zinc-blende and wurtzite BN, AlN, and GaN. We have calculated lattice parameters, elastic constants, deformation potential constants, phonon frequencies at Γ point, Born effective charges, and piezoelectric constants. Lattice parameters are fully relaxed by using the first-principles molecular dynamics method with variable cell shape. The internal strain in a strained crystal is also relaxed by the first-principles molecular dynamics method. The internal strain influences the elastic constants, the deformation potential constants, and the piezoelectric constants effectively. We have calculated the wurtzite deformation potential constants D1-D5 considering the internal strain correction. The piezoelectric constants of wurtzite and also zinc-blende crystals have been calculated using the Berry phase approach and we have found from first principles that those of BN have an inverse sign in contrast to AlN and GaN. Discussions will be given in comparison with results obtained herein with the previous ones.

    Original languageEnglish
    Pages (from-to)4951-4958
    Number of pages8
    JournalJournal of Applied Physics
    Volume84
    Issue number9
    Publication statusPublished - 1998 Nov 1

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    elastic properties
    electronics
    wurtzite
    lattice parameters
    zinc
    molecular dynamics
    crystals
    cells
    energy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Physics and Astronomy (miscellaneous)

    Cite this

    First-principles study on electronic and elastic properties of BN, AlN, and GaN. / Shimada, Kazuhiro; Sota, Takayuki; Suzuki, Katsuo.

    In: Journal of Applied Physics, Vol. 84, No. 9, 01.11.1998, p. 4951-4958.

    Research output: Contribution to journalArticle

    Shimada, Kazuhiro ; Sota, Takayuki ; Suzuki, Katsuo. / First-principles study on electronic and elastic properties of BN, AlN, and GaN. In: Journal of Applied Physics. 1998 ; Vol. 84, No. 9. pp. 4951-4958.
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