Department of Physics, Article

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Recent Submissions

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...
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...
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...
Temperature effects on optical characteristics of CdSe thin films
Gullu, H. H.; Isik, M.; Surucu, O.; Hasanlı, Nızamı; Parlak, Mehmet (Elsevier BV, 2021-03-01)
CdSe is one of the significant members of II-VI type semiconducting family and it has a wide range of technological applications in which optoelectronic devices take a special position. The present paper reports the struct...
Enhanced Hydrogen Storage of a Functional material: Hf2CF2 MXene with Li Decoration
Gencer, Ayşenur; Aydın, Sezgin; Sürücü, Özge; Wang, Xiaotian; Deligöz, Engin; Sürücü, Gökhan (2021-03-01)
In this paper, the hydrogen storage properties of the Li-decorated stable Hf2CF2MXene layer, obtained by the exfoliation of Al from Hf2AlC and F-termination, are considered by using first-principles calculations based on D...
Dewitt, Chris; Edelstein, Jose; Tekin, Bayram (2021-03-01)
Structural and optical properties of thermally evaporated (GaSe)0.75-(GaS)0.25 thin films
Isik, M.; Emir, C.; Hasanlı, Nızamı (2021-03-01)
GaSe and GaS binary semiconducting compounds are layered structured and have been an attractive research interest in two-dimensional material research area. The present paper aims at growing (GaSe)0.75 - (GaS)0.25 (or simp...
Gravitational formfactors of the rho, pi, and K mesons in the light-cone QCD sum rules
Alıyev, Tahmasıb; Barakat, T.; Simsek, K. (2021-03-01)
By using the quark part of the energy-momentum tensor current, the gravitational formfactors of the rho, pi, and K mesons are calculated within the light-cone sum rules method. In the considered version, the energy-momentu...
The investigation of electronic nature and mechanical properties under spin effects for new half-metallic ferromagnetic chalcogenides Ag3CrX4 (X = S, Se, and Te)
Erkisi, Aytac; YILDIZ, BUĞRA; Wang, Xiaotian; Isik, Mehmet; Ozcan, Yusuf; Sürücü, Gökhan (2021-02-01)
© 2020This study presents the electronic and mechanical characteristics of ternary silver-based Ag3CrX4 (X = S, Se, and Te) chalcogenides having simple cubic crystalline structure (SC), conforming P4-3m (space group: 215) ...
Calculation of the inverse relaxation time and the activation energy as a function of temperature for the Raman modes close to the phase transitions in solid nitrogen
Yurtseven, Hasan Hamit; Akay, O. (Elsevier BV, 2021-02-01)
The inverse relaxation time is calculated as a function of temperature for the transitions of alpha - beta (P = 0) and epsilon-delta(loc)-delta (at constant pressures) in the solid N-2. For this calculation, the observed d...
Observation of in situ enhanced crystallization, negative resistance effect and photosensitivity in Tl2InGaSe4 crystals
Qasrawi, A. F.; Irshaid, Tahani M. A.; Hasanlı, Nızamı (Elsevier BV, 2021-02-01)
In this work, we report the properties of Tl2InGaSe4 crystals as multifunctional material. Namely, Tl2InGaSe4 crystals are grown by the modified Bridgman method using mixtures of TlInSe2 (50%) and TlGaSe2 (50%) single crys...
Spectroscopic ellipsometry study of Bi12TiO20 single crystals
Isik, M.; Hasanlı, Nızamı; Darvishov, N. H.; Bagiev, V. E. (2021-02-01)
Bi12XO20 (X: Si, Ge, Ti, etc.) ternary compounds have attracted attention especially due to their fascinating photorefractive characteristics. The present paper introduces the structural and optical characteristics of Bi12...
Phenomenological approaches on the Nd3+ doped ferroelectric LaBGeO5
Kara, N.; Kiraci, A.; Yurtseven, Hasan Hamit (2021-02-01)
Two phenomenological models, namely the compressible Ising model and Landau model, have been used to analyze the specific heat and the dielectric constant data, respectively for the pure and Nd3+ doped LaBGeO5 (LBG) crysta...
3D-graphene-laser patterned p-type silicon Schottky diode
Orhan, Elif Oz; Efil, Esra; Bayram, Ozkan; Kaymak, Nuriye; Berberoğlu, Halil; Candemir, Ozun; Pavlov, Ihor; Ocak, Sema Bilge (Elsevier BV, 2021-01-01)
© 2020 Elsevier LtdThe influence of the laser patterning (LP) process on the quality of graphene (Gr) film and Schottky diode characteristics was researched in this study. First of all, p-type silicon (Si) was patterned by...
Ultra-thin Al2O3 capped with SiNx enabling implied open-circuit voltage reaching 720mV on industrial p-type Cz c-Si wafers for passivated emitter and rear solar cells
Koekbudak, Gamze; Kececi, Ahmet E.; Nasser, Hisham; Turan, Raşit (American Vacuum Society, 2021-01-01)
In this study, we report on the passivation quality of atomic layer deposition grown ultra-thin Al2O3 and Al2O3 capped with plasma-enhanced chemical vapor deposition deposited SiNx on Cz p-type wafers for the rear side of ...
Temperature dependence of the piezoelectric resonance frequency in relation to the anomalous strain near the incommensurate phase of quartz
Ates, S.; Yurtseven, Hasan Hamit (2021-01-01)
The temperature dependence of the piezoelectric resonance frequency is analyzed by the power-law formula in the vicinity of the critical temperature of the incommensurate (INC) phase in quartz using the experimental data f...
Morphology dependent interaction between Co(II)-tetraphenylporphyrin and the MgO(100) surface
Ninova, Silviya; Malcıoğlu, Osman Barış; Auburger, Philipp; Franke, Matthias; Lytken, Ole; Steinrueck, Hans-Peter; Bockstedte, Michel (2021-01-01)
Porphyrins are key elements in organic-inorganic hybrid systems for a wide range of applications. Understanding their interaction with the substrate gives a handle on structural and electronic device properties. Here we in...
Temperature-dependent optical characteristics of sputtered Ga-doped ZnO thin films
Gullu, H. H.; Isik, M.; Hasanlı, Nızamı; Parlak, Mehmet (2021-01-01)
The present paper reports structural and optical properties of gallium (Ga) doped ZnO thin films (GZO) grown by magnetron sputtering technique. The crystalline properties were determined from X-ray diffraction measurements...
Galaktik Be/X-ışın Çiftleri: X-ışın, Optik/IR Bölge ve Yörünge Özellikleri
Özbey Arabacı, Mehtap; Kızıloğlu, Ümit; Saguner Rambaldi, Tenay; Yerli, SİNAN KAAN (2020-12-11)
Galaktik Yüksek Kütleli X-ışın çiftlerinin en kalabalık sınıfı olan Be/X-ışın çiftleri, sistemden sisteme değişen X-ışın/optik/IR bölge davranışları ve boşaltım/yığılma diski fiziğini aynı anda çalışabilme imkanı sunmaları...
Optical characteristics of Bi12SiO20 single crystals by spectroscopic ellipsometry
Isik, M.; Delice, S.; Nasser, H.; Hasanlı, Nızamı; Darvishov, N. H.; Bagiev, V. E. (Elsevier BV, 2020-12-01)
Structural and optical characteristics of Bi12SiO20 single crystal grown by the Czochralski method were investigated by virtue of X-ray diffraction (XRD) and spectroscopic ellipsometry measurements. XRD analysis indicated ...
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