Department of Physics, Article

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Recent Submissions

Equiatomic quaternary Heusler compounds TiVFeZ (Z=Al, Si, Ge): Half-metallic ferromagnetic materials
Gencer, A.; Surucu, O.; Usanmaz, D.; Khenata, R.; Candan, A.; Sürücü, Gökhan (2021-11-25)
© 2021 Elsevier B.V.Equiatomic quaternary Heusler compounds (EQHCs) are very promising materials for spintronic applications due to their excellent electronic and magnetic properties. In this study, structural, electronic,...
Effect of thallium (Tl) substitution for indium (In) on ellipsometric characteristics of TlInSe2 single crystals
Isik, M.; Hasanlı, Nızamı (2021-11-01)
© 2021 Elsevier LtdTlMeSe2 (Me: Tl, In) semiconducting compounds exhibiting chain structure have been attractive ternary materials in various technological devices. In the TlMeSe2 structure, Tl1+ is monovalent while Me3+ i...
Experimental and theoretical investigation of the mechanical characteristics of sillenite compound: Bi12GeO20
Sürücü, Gökhan; Işık, Mehmet; Gencer, Ayşenur; Hasanlı, Nızamı (2021-11-01)
The effects of charmonium on the properties of the 1++ hidden charm poles in effective field theory
Cincioglu, E.; Özpineci, Altuğ; Yildirim Yilmaz, D. (2021-10-01)
© 2021 Elsevier B.V.In this study, the properties of the JPC=1++ hidden charm poles are analyzed under the variation of the bare 2P charmonium mass within the effective field theory proposed in Ref. [1]. The main focus of ...
Spreading resistance modeling for rapid extraction of contact resistivity with a four-point probe
Turkay, Deniz; Tsoi, Konstantin; Donercark, Ergi; Turan, Raşit; Yerci, Selçuk (2021-09-15)
© 2021 Elsevier B.V.Extraction of contact resistivity (ρc) with the four-point probe (4PP) method requires considerably fewer fabrication and measurement steps compared to conventional alternatives (e.g. the transfer lengt...
Beyond 3rd generation solar cells and the full spectrum project. Recent advances and new emerging solar cells
Akınoğlu, Bülent Gültekin; Tuncel, Bilge; Badescu, Viorel (2021-08-01)
© 2021 Elsevier LtdSolar cells have over 50-years of development history; many different devices and technologies are studied over this time span, and interestingly it is still a hot research topic. Although the physical m...
Electronic, optical and thermodynamic characteristics of Bi12SiO20 sillenite: First principle calculations
Işık, Mehmet; Sürücü, Gökhan; Gencer, Ayşenur; Hasanlı, Nızamı (2021-07-01)
Single-molecule-resolution ultrafast near-field optical microscopy via plasmon lifetime extension
© 2021 Author(s).Metal nanostructures support plasmon oscillations on their surfaces, which normally decay very quickly. Nevertheless, the lifetime of these oscillations can be extended near a longer lifetime particle, e.g...
Surface Physical Properties of Ion Beam Sputtered Copper Thin Films on Poly Tetrafluoroethylene
Atta, A.; Abdeltwab, E.; Bek, Alpan (2021-06-01)
In this study thin copper (Cu) films are deposited on poly tetrafluoroethylene (PTFE) substrate using ion beam sputtering technique. The films are characterized using Raman spectroscopy, UV-VIS spectroscopy and atomic forc...
Fabrication of flexible, cost-effective, and scalable silver substrates for efficient surface enhanced Raman spectroscopy based trace detection
Khan, Ghazanfar Ali; Demirtas, O. Ozge; Demir, Ahmet Kemal; AYTEKİN, ÖZLEM; Bek, Alpan; Bhatti, Arshad Saleem; Ahmed, Waqqar (2021-06-01)
The fabrication and optimization of cost-effective, eco-friendly, uniform and flexible SERS platforms by facile synthesis routes has recently attracted great attention for trace detection of various analytes. Herein, we re...
Investigation of vibrational, elastic and dielectric properties of cubic gauche nitrogen (cg-N)
Akay, Ö.; Yurtseven, Hasan Hamit (2021-06-01)
© 2021 Elsevier GmbHVibrational, elastic and dielectric properties of the cubic gauche nitrogen (cg-N) are investigated by analyzing the Raman optic and zone-center phonon modes using the literature data. From the pressure...
Defect characterization in Bi12GeO20 single crystals by thermoluminescence
Delice, S.; Isik, M.; SARIGÜL, NESLİHAN; Hasanlı, Nızamı (2021-05-01)
Bi12GeO20 single crystal grown by Czochralski method was investigated in terms of thermoluminescence (TL) properties. TL experiments were performed for various heating rates between 1 and 6 K/s in the temperature region of...
Structural and temperature-tuned bandgap characteristics of thermally evaporated beta-In2S3 thin films
Surucu, O.; Isik, M.; Terlemezoglu, M.; Hasanlı, Nızamı; Parlak, M. (2021-05-01)
In2S3 is one of the attractive compounds taking remarkable interest in optoelectronic device applications. The present study reports the structural and optical characteristics of thermally evaporated beta-In2S3 thin films....
Strong BQQ′∗BQQ′V vertices and the radiative decays of BQQ∗→BQQγ in the light-cone sum rules
Alıyev, Tahmasıb; Barakat, T.; Şimşek, K. (2021-05-01)
© 2021, The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.The strong coupling constants of spin-3/2 to spin-1/2 doubly heavy baryon transitions w...
Heavy Z′ bosons in the secluded U(1) ′ model at hadron colliders
Frank, Mariana; Selbuz, Levent; Turan, İsmail (2021-05-01)
© 2021, The Author(s).We study Z′ phenomenology at hadron colliders in an U(1) ′ extended MSSM. We choose a U(1) ′ model with a secluded sector, where the tension between the electroweak scale and developing a large enough...
The Kerr-Schild double copy in Lifshitz spacetime
ALKAÇ, GÖKHAN; Gümüş, Mehmet Kemal; Tek, Mustafa (2021-05-01)
© 2021, The Author(s).The Kerr-Schild double copy is a map between exact solutions of general relativity and Maxwell’s theory, where the nonlinear nature of general relativity is circumvented by considering solutions in th...
Approximate analytical description of apparent horizons for initial data with momentum and spin
Altas, Emel; Tekin, Bayram (2021-04-21)
© 2021 American Physical Society.We construct analytical initial data for a slowly moving and rotating black hole for generic orientations of the linear momentum and the spin. We solve the Hamiltonian constraint approximat...
Spectral splitting and concentration of broadband light using neural networks
Yolalmaz, Alim; Yüce, Emre (2021-04-01)
Compact photonic elements that control both the diffraction and interference of light offer superior performance at ultra-compact dimensions. Unlike conventional optical structures, these diffractive optical elements can p...
First principles study of Bi12GeO20: Electronic, optical and thermodynamic characterizations
Işık, Mehmet; Sürücü, Gökhan; Gencer, Ayşenur; Hasanlı, Nızamı (2021-04-01)
Bismuth germanium oxide (Bi12GeO20) is one of the attractive members of sillenite compounds having fasci-nating photorefractive characteristics. The electronic, optical and thermodynamic properties of Bi12GeO20 were invest...
Investigation of traps distribution in GaS single crystals by thermally stimulated current measurements
Delice, S.; Isik, M.; Hasanlı, Nızamı (2021-04-01)
Thermally stimulated current (TSC) investigations of p-GaS (gallium sulfide) single crystals grown by Bridgman method were achieved by virtue of consecutive experiments carried out at various heating rates in between 0.4 a...
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