Publications:

S. Ciraci, S. Dag, T. Yildirim, O. Gülseren, and R.T. Senger;

Functionalized carbon nanotubes and device applications,

Journal of Physics: Condensed Matter 16 R901-R960 (2004).

A. Strachan, T. Cagin, O. Gülseren, S. Mukherjee, R.E. Cohen and W. A. Goddard, III;

First principles force field for metallic tantalum,

Modelling and Simulation in Materials Science and Engineering 12 S445-S459 (2004).

 E. Durgun, S. Dag, S. Ciraci, and O. Gülseren;

Energetics and Electronic Structures of Individual Atoms Adsorbed on Carbon Nanotubes,

The Journal of Physical Chemistry: B 108 575-582 (2004).

S. Dag, O. Gülseren, and S. Ciraci;

A comparative study of O₂ adsorbed carbon nanotubes,

Chemical Physics Letters 380 1-5 (2003).

O. Gülseren, T. Yildirim, and S. Ciraci;

Formation of quantum structures on a single nanotube by modulating hydrogen adsorption,

Physical Review B 68 115419 (2003).

S. Dag, O. Gülseren, S. Ciraci, and T. Yildirim;

Electronic structure of the contact between carbon nanotube and metal electrodes,

Applied Physics Letters 83 3180-3182 (2003).

Reviewed on Nano Today, Dec. 2003, p6.

 E. Durgun, S. Dag, V.M.K. Bagci, O. Gülseren, T. Yildirim, and S. Ciraci;

Systematic study of adsorption of single atoms on a carbon nanotube,

Physical Review B  67  201401   (2003).

S. Dag, O. Gülseren, T. Yildirim, and S. Ciraci;

Oxygenation of carbon nanotubes: Atomic structure, energetics and electronic structure,

Physical Review B  67  165424   (2003).

S. Mukherjee, R.E. Cohen and O. Gülseren;

Vacancy formation enthalpy at high pressures in tantalum,

Journal of Physics: Condensed Matter 15, 855-861 (2003).

 T. Yildirim and O. Gülseren;

First-Principles Zone-Center Theory of Superconductivity in MgB₂ ,

Applied Physics A 74S1 945-947 (2002).

 H. Fu, and O. Gülseren;

Piezoelectric Pb(Zr_0.5Ti_0.5 )O₃: Interplay of atomic ordering, ferroelectric soft modes, and pressure,

Physical Review B  66 214114 (2002).

 T. Yildirim and O. Gülseren;

A Simple Theory of 40~K Superconductivity in MgB₂;

First-principles calculations of T_c, its dependence on boron mass and pressure,

J. Phys. and Chem. of Solids 63 2201-2206 (2002).

O. Gülseren, T. Yildirim, ve S. Ciraci;

Effects of hydrogen adsorption on single wall carbon nanotubes: metallic hydrogen decoration,

Physical Review B  66 121401 (2002).

     NIST News release:

            see http://www.nist.gov/public_affairs/releases/n02-17.htm,

        Reviewed on Materials Today, Dec. 2002, p10.

   Also reviewed on Materials Research Society, MRS Bulletin, December  2002, p944.

K. Bagci, O. Gülseren, T. Yildirim, Z. Gedik, and S. Ciraci;

Metal nanoring and tube formation on carbon nanotubes,

Physical Review B 66 045409  (2002).

 P. Sen, O. Gülseren, T. Yildirim, S. Ciraci and I. Batra;

Pentagonal nanowires: a first-principles study of atomic and electronic structure,

Physical Review B  65 235433 (2002).

 O. Gülseren, T. Yildirim, and S. Ciraci;

A systematic ab-initio study of curvature effects in carbon nanotubes,

Physical Review B  65 153405 (2002).

 O. Gülseren, T. Yildirim, S. Ciraci, and C. Kilic;

Reversible band gap engineering in carbon nanotubes by radial deformation,

Physical Review B  65 155410 (2002).

O. Gülseren and R.E. Cohen;

High pressure thermoelasticity of bcc tantalum,

Physical Review B  65 064103 (2002).

O. Gülseren, T. Yildirim and S. Ciraci;

Tunable adsorption on carbon nanotubes,

Physical Review Letters  87, 116802 (2001).

     Reviewed on Materials Today, November 2001, p.10

T. Yildirim, O. Gülseren, J.W. Lynn, C.M. Brown, T.J. Udovic, Q. Huang, N. Rogado, K.A. Regan,

 M.A. Hayward, J.S. Slusky, T. He, M.K. Haas, P. Khalifah, K. Inumaru, and R.J. Cava;

Giant anharmonicity and non-linear electron-phonon coupling in MgB₂;

Combined first-principles calculations and neutron scattering study,

Physical Review Letters  87, 037001, (2001).

     Reviewed as APS Focus story, July 2001, see                      

                  http://focus.aps.org/v8/st2.html

     Reviewed on Materials Today, September 2001, p.10

G. Steinle-Neumann, L. Stixrude, R.E. Cohen and O. Gülseren;

Elasticity of iron at the temperature of the Earth's inner core,

Nature  413, 57 (2001).

     Reviewed on Physics Today, November 2001, p.17

T. Yildirim, O. Gülseren and S. Ciraci;

Exohydrogenated single wall carbon nanotubes,

Physical Review B  64, 075404 (2001).

R.E. Cohen and O. Gülseren;

Thermal equation of state of tantalum,

Physical Review B  63, 224101 (2001).

T. Yildirim, O. Gülseren, C. Kilic and S. Ciraci;

Pressure-induced interlinking of carbon nanotubes,

Physical Review B  62, 12648 (2000).

C. Kilic, S. Ciraci, O. Gülseren  and T. Yildirim;

Variable and reversible quantum structures on a single carbon nanotube,

Physical Review B  62, 16345 (2000).

R.E. Cohen, O. Gülseren and R.J. Hemley;

Accuracy of equation of state formulations,

American Mineralogist 85, 338-344 (2000).

C.L. Pang, S.A. Haycock, H. Raza, P.W. Murray, G. Thornton, O. Gülseren, R. James and D.W. Bullett;

Comment on ''High resolution scanning tunneling microscopy of the TiO₂(110) surface,

Surface Science 437, 261-262 (1999).

O. Gülseren, F. Ercolessi and E. Tosatti;

Non-crystalline structures of ultrathin unsupported nanowires,

Physical Review Letters 80, 3775-3778 (1998).

        Reviewed by U. Landman, Physics World, July 1998, p.18

     1998/99 Highlights INFM (The National Institute for the Physics of Matter, Italy):

 the best scientific research carried out by INFM teams, selected by the INFM Scientific Council.

C.L. Pang, S.A. Haycock, H. Raza, P.W. Murray, G. Thornton, O. Gülseren, R. James and D.W. Bullett;

Added row model of TiO₂ (110) 1x2,

Physical Review B  58, 1586-1589 (1998).

O. Gülseren, D.M. Bird and S.E. Humphreys;

A mixed basis approach for the efficient calculation of potential energy surfaces,

Surface Science 402-404, 827-830 (1998).

O. Gülseren, R. James and D.W. Bullett;

Theoretical analysis of STM experiments at rutile TiO₂ surfaces,

Surface Science  377-379, 150-154 (1997).

O. Gülseren, F. Ercolessi and E. Tosatti;

Pre-melting of thin wires,

Physical Review B  51, 7377-7380 (1995).

V.A. Kochelap, and O. Gülseren;

Localization of acoustical modes due to the electron-phonon interaction within

a two-dimensional electron gas,

Journal of Physics: Condensed Matter  5, 589-598 (1993).

O. Gülseren, and S. Ciraci;

Electric field effects on finite length superlattices,

Physical Review B  46, 7621-7626 (1992).

V.A. Kochelap, and O. Gülseren;

Confinement of acoustical modes due to the electron-phonon interaction within electron sheet,

Pis'ma JETP (Letters to JETP) 56, 93-97 (1992).

O. Gülseren and S. Ciraci;

Electronic structure of Si  δ-layer embedded in Ge(001),

Semiconductor Science and Technology 6, 1002-1005 (1991).

O. Gülseren and S. Ciraci;

Electronic structure of Si-Ge superlattices grown on Ge(001),

Semiconductor Science and Technology 6, 638-641 (1991).

S. Ciraci, O. Gülseren and S. Ellialtioglu;

Electronic structure of strained Si_nGe_n(001) superlattices,

Solid State Communication 65, 1285-1290  (1988).

 E. Tekman, O. Gülseren, A. Ormeci and S. Ciraci;

A study on the reconstruction of Ga terminated GaAs[111] surface,

Solid State Communication 56, 501-504  (1985).

B. Refereed National Journals  :

O. Gülseren and S. Ciraci;

Multilayer Semiconductor Structures,

Doğa, Turkish Journal of Physics 14, 117-137  (1990).

C. Refereed published as conference proceedings :

S. Dag, O. Gülseren, S. Ciraci and T. Yildirim;

Physisorption of oxygen molecule on Carbon Nanotubes,

NATO-ASI Series: Nanoengineered Nanofibrous Materials,

editors: S. Guceri, Y. Gogotsi, and V. Kuzentsov;

Kluwer Academic Book Publishers, Dordrecht, Netherlands (2004). page 135.

O. Gülseren, S. Dag, E. Durgun, T. Yildirim and S. Ciraci;

Functionalization of Carbon Nanotubes: Single atom adsorption,

NATO-ASI Series: Nanoengineered Nanofibrous Materials,

editors: S. Guceri, Y. Gogotsi, and V. Kuzentsov;

Kluwer Academic Book Publishers, Dordrecht, Netherlands (2004).  page 163.

S. Ciraci, O. Gülseren, S. Dag, E. Durgun and T. Yildirim;

Theoretical models for nanodevices and nanomagnets based on Carbon Nanotubes,

NATO-ASI Series: Nanoengineered Nanofibrous Materials,

editors: S. Guceri, Y. Gogotsi, and V. Kuzentsov;

Kluwer Academic Book Publishers, Dordrecht, Netherlands (2004). page 181.

T. Yildirim, O. Gülseren and S. Ciraci;

Intimate relationship between structural deformation and properties of

single-walled carbon nanotubes and its hydrogenated derivatives,

NATO-ASI Series: Nanoengineered Nanofibrous Materials,

editors: S. Guceri, Y. Gogotsi, and V. Kuzentsov;

Kluwer Academic Book Publishers, Dordrecht, Netherlands (2004). page 197.