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Browsing Fizik / Physics by Author "Tütüncü, Hüseyin Murat"

Now showing items 1-20 of 94

A comparative ab initio study of superconductivity in the body centered tetragonal YC2 and LaC2

Tütüncü, Hüseyin Murat; G. P. Srivastava (AMER INST PHYSICS, 2015)

Ab initio studies of the electronic band structure and phonon dispersion relations, using the planewave pseudopotential method and the density functional theory, have been made for the superconducting materials YC2 and ...
A comparative study of surface phonons on CdTe(110) and InSb(110)

Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 2001)

We have studied the lattice dynamics of the CdTe(110) and InSb(110) surfaces by using the adiabatic bond-charge model. The atomic geometry and electronic informations for the phonon calculations have been obtained by using ...
Ab initio calculation of phonons for bulk TiC and TiC(001)(1X1)

Bağcı, Sadık; Tütüncü, Hüseyin Murat (AMER PHYSICAL SOC, 2009)

We present an ab initio pseudopotential study, within the local density functional approximation, of the structural and elastic properties of rock-salt TiC. The calculated structural and elastic properties of TiC are in ...
Ab initio calculation of phonons in bulk HfC and the HfC(001)(1 x 1) surface

Bağcı, Sadık; Tütüncü, Hüseyin Murat; Duman, Sıtkı (TAYLOR & FRANCIS LTD, 2011)

Structural, elastic and dynamical properties of the rock-salt HfC have been studied by employing an ab initio pseudopotential method and a linear response scheme, within the generalised gradient approximation. In addition ...
Ab initio calculation of the ground-state properties of COSi2

Tütüncü, Hüseyin Murat; Duman, Sıtkı (IOP PUBLISHING LTD, 2005)

We have investigated the structural and electronic properties of CoSi2 by using a generalized gradient approximation of the density functional theory and ab initio pseudopotentials. The calculated lattice constant and ...
Ab initio calculation of the structural and dynamical properties of the zinc-blende BN and its (110) surface

Bağcı, Sadık; Duman, Sıtkı; Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE SA, 2006)

Using a first-principles pseudopotential technique, we have presented static and dynamical properties of cubic-BN. The calculated values for the lattice constant, bulk modulus, its first derivative and optical dielectric ...
Ab initio calculations and dynamical properties of the Se : InP(110) and Te : InP(110)

Tütüncü, Hüseyin Murat; Güney, Yılmaz (ELSEVIER SCIENCE BV, 2006)

We present results of ab initio theoretical investigations of the structural and dynamical properties of the Se:InP(110) and Te:InP(110) surfaces, by employing the plane wave pseudopotential method, the local density ...
Ab initio calculations of phonon dispersion relations for bulk and (110) surface of cubic InN

Bağcı, Sadık; Duman, Sıtkı; Tütüncü, Hüseyin Murat (PERGAMON-ELSEVIER SCIENCE LTD, 2009)

The ground-state structural and dynamical properties of cubic InN and its (110) surface are calculated using density functional theory within the generalised gradient approximation. A detailed discussion is provided for ...
Ab initio calculations of structural, electronic and dynamical properties of BeSe(110) surface

Bağcı, Sadık; Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 2007)

We use an ab initio pseudopotential method within the local-density approximation to determine the structural and electronic properties of the BeSe(1 1 0) surface. The relaxed geometry of this surface shows tilted cation-anion ...
Ab initio calculations of surface phonons of the hydrogen-terminated Si(110)-(1 x 1) surface

Tütüncü, Hüseyin Murat; Karaca, Ertuğrul; G. P. Srivastava (ELSEVIER SCIENCE BV, 2016)

A first-principles study, using a linear-response approach based on the pseudopotential method and the generalised gradient approximation, has been made to examine the phonon spectrum of the hydrogen-terminated Si(110)-(1 ...
Ab initio investigation of BCS-type superconductivity in LuNi2B2C-type superconductors

Tütüncü, Hüseyin Murat; Uzunok, Hüseyin Yasin; Karaca, Ertuğrul; G. P. Srivastava; S. Ozer; S. Ugur (AMER PHYSICAL SOC, 2015)

Ab initio pseudopotential calculations have been made to calculate the structural, electronic, vibrational, and superconducting properties of the borocarbide superconductors RM2B2C (R = Lu, La, Y; M = Ni,Pd,Pt). Using the ...
Ab initio investigation of superconductivity in noncentrosymmetric Ca3Ir4Ge4

Tütüncü, Hüseyin Murat; G. P. Srivastava (TAYLOR & FRANCIS LTD, 2015)

K is obtained, in good agreement with a recent experimental study.
Ab initio investigation of superconductivity in orthorhombic MgPtSi

Tütüncü, Hüseyin Murat; Karaca, Ertuğrul; G. P. Srivastava (ELSEVIER SCIENCE SA, 2016)

We have performed an ab initio study of electronic, vibrational and superconducting properties of the orthorhombic MgPtSi by employing the density functional theory, a linear-response formalism, and the plane-wave ...
Ab initio investigation of surface phonons on the (001) surface of KCl

Tütüncü, Hüseyin Murat; G. P. Srivastava (ELSEVIER, 2015)

We present an ab initio investigation of localised and resonant phonons on the relaxed KCl(001) surface. Our calculated results are in good accordance with recent high-resolution helium atom scattering measurements. The ...
Ab initio investigation of surface phonons on the (001) surface of ZrC

Bağcı, Sadık; Tütüncü, Hüseyin Murat (ELSEVIER, 2014)

We presented an ab initio pseudopotential study within the generalized gradient density functional approximation of the structural and electronic properties of the ZrC(0 0 1) surface. The calculated structural parameters ...
Ab initio investigations of phonon anomalies and superconductivity in the rock-salt YS

Tütüncü, Hüseyin Murat (TAYLOR & FRANCIS LTD, 2007)

The phonon spectrum, phonon linewidths and electron-phonon coupling parameter for YS have been calculated by using a first-principles scheme, based on the application of the plane-wave pseudopotential method, density ...
Ab initio investigations of phonons and superconductivity in the cubic Laves structures LaAl2 and YAl2

Duman, Sıtkı; Tütüncü, Hüseyin Murat (AMER INST PHYSICS, 2012)

We have performed an ab initio study of structural, elastic, electronic, lattice-dynamical, and electron-phonon interaction properties of the cubic Laves structures LaAl2 and YAl2. The calculations have been carried out ...
Ab initio investigations of the phonon anomaly and superconductivity in fcc La

Tütüncü, Hüseyin Murat (AMER INST PHYSICS, 2008)

We have employed the ab initio plane wave pseudopotential method within a generalized gradient approximation of the density functional theory and a linear response approach to investigate the phonon anomaly and superconductivity ...
Atomic geometry, electronic states and vibrational properties of the AlAs(110) surface

Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 2000)

We have investigated the atomic geometry and electronic structure of the AlAs(110) surface by using the local density approximation of the density functional theory and ab initio pseudopotentials. The structural and ...
Atomic geometry, electronic structure, and vibrational properties of the AlSb(110) and GaSb(110) surfaces

Tütüncü, Hüseyin Murat (AMER PHYSICAL SOC, 1999)

We have investigated the atomic geometry and electronic structure of the clean (110) surfaces of AlSb and GaSb using the nb initio pseudopotential theory. The calculated atomic geometry for these surfaces is in good agreement ...