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Browsing Fakülteler / Faculties by Author "Tütüncü, Hüseyin Murat"

Browsing Fakülteler / Faculties by Author "Tütüncü, Hüseyin Murat"

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  • Phonons and superconductivity in fcc and dhcp lanthanum 
    Bağcı, Sadık; Tütüncü, Hüseyin Murat; Duman, Sıtkı (AMER PHYSICAL SOC, 2010)
    We have investigated the structural and electronic properties of lanthanum in the face-centered-cubic (fcc) and double hexagonal-close-packed (dhcp) phases using a generalized gradient approximation of the density functional ...
  • Phonons and superconductivity in the cubic perovskite Cr3RhN 
    Tütüncü, Hüseyin Murat (AMER INST PHYSICS, 2012)
    We have performed an ab initio study of structural, electronic, vibrational, and superconducting properties of Cr3RhN. The calculations have been carried out by employing the density functional theory, a linear-response ...
  • Phonons in zinc-blende and wurtzite phases of GaN, AlN, and BN with the adiabatic bond-charge model 
    Tütüncü, Hüseyin Murat (AMER PHYSICAL SOC, 2000)
    The lattice dynamics of the zinc-blende and wurtzite phases of GaN, AlN, and BN is studied using the adiabatic bond-charge model. The resulting phonon spectra for zinc-blende GaN and AIN compare very well with ab initio ...
  • Phonons on GaN(110) 
    Tütüncü, Hüseyin Murat (AMER INST PHYSICS, 2002)
    We present results of adiabatic bond-charge model calculations for the vibrational properties of the GaN(110) surface using electronic and structural data obtained from a first-principles pseudopotential method. It is found ...
  • Phonons on group-III nitride (110) surfaces 
    Tütüncü, Hüseyin Murat (AMERICAN PHYSICAL SOC, 2002)
    We have applied the adiabatic bond-charge model within a supercell approach to study the lattice dynamics of group-III nitride (110) surfaces. The structural and electronic information necessary for these calculations is ...
  • Phonons on II-VI (110) semiconductor surfaces 
    Tütüncü, Hüseyin Murat (AMER PHYSICAL SOC, 2000)
    We have studied the phonon dispersion and density-of-states on the (110) surface of LI-VT compounds CdTe, ZnTe, and ZnS in their zinc-blende phase by applying the adiabatic bond charge model. The relaxed surface atomic ...
  • Physical properties of the body-centred tetragonal CaPd2Ge2 
    Karaca, Ertuğrul; E. Arslan; Tütüncü, Hüseyin Murat; G. P. Srivastava (TAYLOR & FRANCIS LTD, 2017)
    We have investigated the structural, elastic, electronic, and lattice dynamical properties of CaPd2Ge2 in the body-centred tetragonal ThCr2Si2 structure using a generalised gradient approximation of the density functional ...
  • Physical properties of the body-centred tetragonal CaPd2Ge2 
    Karaca, Ertuğrul; Arslan, Evren; Tütüncü, Hüseyin Murat; G. P. Srivastava (TAYLOR & FRANCIS LTD, 2017)
    We have investigated the structural, elastic, electronic, and lattice dynamical properties of CaPd2Ge2 in the body-centred tetragonal ThCr2Si2 structure using a generalised gradient approximation of the density functional ...
  • Role of spin-orbit coupling in the physical properties of LaX3 (X=In, P, Bi) superconductors 
    Tütüncü, Hüseyin Murat; Karaca, Ertuğrul; Uzunok, Hüseyin Yasin; G. P. Srivastava (AMER PHYSICAL SOC, 2018)
    We report a comprehensive and complementary study on structural, elastic, mechanical, electronic, phonon, and electron-phonon interaction properties of LaX3 (X = In, Pb, and Bi) using first-principles density functional ...
  • Structural and dynamical properties of As overlayers on the GaAs(110) surface 
    Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 2003)
    We present structural and dynamical properties of the As covered GaAs(1 1 0) surface based on ab initio density-functional calculations and a linear-response approach. Characteristic phonon modes due to a monolayer deposition ...
  • Structural and dynamical properties of zinc-blende GaN, AlN, BN, and their (110) surfaces 
    Tütüncü, Hüseyin Murat; Bağcı, Sadık (AMERICAN PHYSICAL SOC, 2005)
    Structural and dynamical properties of the zinc-blende bulk phase and the (110) surface of the nitride materials GaN, AIN and BN have been studied by employing an ab initio pseudopotential method and a linear response ...
  • Structural, elastic, electronic, and phonon properties of zinc-blende and wurtzite BeO 
    Duman, Sıtkı; Bağcı, Sadık; Tütüncü, Hüseyin Murat (AMER INST PHYSICS, 2009)
    The results of ab initio calculations of the structural, elastic, electronic, and phonon properties of BeO in both zinc-blende and wurtzite structures are presented. Our calculations are based on the application of plane-wave ...
  • Structural, electronic, and dynamical properties of Si(110) capped with a monolayer of GaAs 
    Tütüncü, Hüseyin Murat (AMER PHYSICAL SOC, 2002)
    Using a first-principles pseudopotential technique, we have presented structural and electronic properties of the Si(110) surface capped with a monolayer of GaAs. These results are further used to investigate the ...
  • Structural, electronic, and dynamical properties of the C(001)-(2 x 1) surface 
    Tütüncü, Hüseyin Murat; Bağcı, Sadık (AMERICAN PHYSICAL SOC, 2004)
    We have made theoretical investigations of the atomic geometry, electronic structure, and lattice dynamics of the C(001)-(2x1) surface. The atomic geometry and electronic structure have been calculated by using the local ...
  • Superconductivity in simple elemental solids - A computational study of boron-doped diamond and high pressure phases of Li and Si 
    Tütüncü, Hüseyin Murat (IOP PUBLISHING LTD, 2005)
    The superconducting phase of several elemental solids under ambient (p-doped diamond) and high pressure conditions (face-centred cubic phases of Li and Si-V) have been studied with the linear response method. The computed ...
  • Surface dynamics of AlSb(110) and GaP(110) 
    Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 1999)
    We have investigated the lattice dynamics of the (110) surface of AlSb and GaP by employing the adiabatic bond-charge model and using the atomic geometry obtained from ab initio pseudopotential calculations. The results ...
  • Surface phonons on Si(001)/As(2x1) 
    Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 1999)
    We present results of phonon calculations for the Si(001)/As(2x1) surface using the adiabatic bond-charge model. It is found that this surface is characterized by two pronounced peaks in the phonon density of states. One ...
  • Surface phonons on the NbC(001) and TaC(001) surfaces 
    Bağcı, Sadık; Tütüncü, Hüseyin Murat; Duman, Sıtkı (AMER PHYSICAL SOC, 2012)
    Structural, electronic, and vibrational properties of NbC(001) and TaC(001) are presented, based on the application of plane-wave basis, pseudopotentials, and the generalized gradient approximation of the density functional ...
  • Surface vibrations of diamond C(001)(2x1) 
    Bağcı, Sadık; Tütüncü, Hüseyin Murat (AMERICAN PHYSICAL SOC, 2003)
    Surface vibrations of diamond C(001)(2 X 1) have been studied by means of electron energy loss spectroscopy as well as first-principles theoretical calculations. Several vibrational modes are newly resolved. Outside the ...
  • The effect of martensitic phase transition from cubic to tetragonal on the physical properties of V3Si superconductor 
    Tütüncü, Hüseyin Murat; Uzunok, Hüseyin Yasin; G. P. Srivastava; V. Ozdemir; G. Ugur (ELSEVIER SCI LTD, 2018)
    We report results of ab-initio studies for the structural, electronic, lattice dynamical and electron-phonon interaction properties of cubic and tetragonal phases of V3Si by using the plane-wave pseudopotential method, the ...