Phonon spectrum and density of states on GaAs(001)-beta(2)(2x4)

Tütüncü, Hüseyin Murat

dc.contributor.authors	Tutuncu, HM; Srivastava, GP;
dc.date.accessioned	2020-01-20T08:02:55Z
dc.date.available	2020-01-20T08:02:55Z
dc.date.issued	2007
dc.identifier.citation	Tutuncu, HM; Srivastava, GP; (2007). Phonon spectrum and density of states on GaAs(001)-beta(2)(2x4). PHYSICAL REVIEW B, 76, -
dc.identifier.issn	1098-0121
dc.identifier.uri	https://hdl.handle.net/20.500.12619/32370
dc.identifier.uri	https://doi.org/10.1103/PhysRevB.76.085345
dc.description.abstract	We have studied the lattice dynamics of the GaAs(001)-beta(2)(2x4) surface by employing two theoretical methods: an ab initio pseudopotential method and a phenomenological adiabatic bond-charge method. Both methods predict a number of surface localized phonon modes. Most of these modes are found to lie at similar energy locations from both methods. However, the two methods produce eigenvectors of some of the modes which are at variance with each other. Possible reasons for such differences are outlined. Particular emphasis has been laid on the discussion of the highest surface phonon mode, which lies above the bulk continuum. A brief discussion of the role of this mode in examining surface reactions has also been provided.
dc.language	English
dc.publisher	AMER PHYSICAL SOC
dc.subject	Physics
dc.title	Phonon spectrum and density of states on GaAs(001)-beta(2)(2x4)
dc.type	Article
dc.identifier.volume	76
dc.contributor.department	Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü
dc.contributor.saüauthor	Tütüncü, Hüseyin Murat
dc.relation.journal	PHYSICAL REVIEW B
dc.identifier.wos	WOS:000249155400097
dc.identifier.doi	10.1103/PhysRevB.76.085345
dc.identifier.eissn	1550-235X
dc.contributor.author	Tütüncü, Hüseyin Murat