TY  - JOUR
AU  - Pesic, Jelena
AU  - Popov, Igor
AU  - Solajic, Andrijana
AU  - Damljanović, Vladimir
AU  - Hingerl, Kurt
AU  - Belic, Milivoj
AU  - Gajic, Rados
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1201
AB  - Magnesium diboride gained significant interest in the materials science community after the discovery of its superconductivity, with an unusually high critical temperature of 39 K. Many aspects of the electronic properties and superconductivity of bulk MgB2 and thin sheets of MgB2 have been determined; however, a single layer of MgB2 has not yet been fully theoretically investigated. Here, we present a detailed study of the structural, electronic, vibrational, and elastic properties of monolayer MgB2, based on ab initio methods. First-principles calculations reveal the importance of reduction of dimensionality on the properties of MgB2 and thoroughly describe the properties of this novel 2D material. The presence of a negative Poisson ratio, higher density of states at the Fermi level, and a good dynamic stability under strain make the MgB2 monolayer a prominent material, both for fundamental research and application studies.
PB  - MDPI, Basel
T2  - Condensed Matter
T1  - Ab Initio Study of the Electronic, Vibrational, and Mechanical Properties of the Magnesium Diboride Monolayer
IS  - 2
VL  - 4
DO  - 10.3390/condmat4020037
ER  - 

@article{
author = "Pesic, Jelena and Popov, Igor and Solajic, Andrijana and Damljanović, Vladimir and Hingerl, Kurt and Belic, Milivoj and Gajic, Rados",
year = "2019",
abstract = "Magnesium diboride gained significant interest in the materials science community after the discovery of its superconductivity, with an unusually high critical temperature of 39 K. Many aspects of the electronic properties and superconductivity of bulk MgB2 and thin sheets of MgB2 have been determined; however, a single layer of MgB2 has not yet been fully theoretically investigated. Here, we present a detailed study of the structural, electronic, vibrational, and elastic properties of monolayer MgB2, based on ab initio methods. First-principles calculations reveal the importance of reduction of dimensionality on the properties of MgB2 and thoroughly describe the properties of this novel 2D material. The presence of a negative Poisson ratio, higher density of states at the Fermi level, and a good dynamic stability under strain make the MgB2 monolayer a prominent material, both for fundamental research and application studies.",
publisher = "MDPI, Basel",
journal = "Condensed Matter",
title = "Ab Initio Study of the Electronic, Vibrational, and Mechanical Properties of the Magnesium Diboride Monolayer",
number = "2",
volume = "4",
doi = "10.3390/condmat4020037"
}

Pesic, J., Popov, I., Solajic, A., Damljanović, V., Hingerl, K., Belic, M.,& Gajic, R.. (2019). Ab Initio Study of the Electronic, Vibrational, and Mechanical Properties of the Magnesium Diboride Monolayer. in Condensed Matter
MDPI, Basel., 4(2).
https://doi.org/10.3390/condmat4020037

Pesic J, Popov I, Solajic A, Damljanović V, Hingerl K, Belic M, Gajic R. Ab Initio Study of the Electronic, Vibrational, and Mechanical Properties of the Magnesium Diboride Monolayer. in Condensed Matter. 2019;4(2).
doi:10.3390/condmat4020037 .

Pesic, Jelena, Popov, Igor, Solajic, Andrijana, Damljanović, Vladimir, Hingerl, Kurt, Belic, Milivoj, Gajic, Rados, "Ab Initio Study of the Electronic, Vibrational, and Mechanical Properties of the Magnesium Diboride Monolayer" in Condensed Matter, 4, no. 2 (2019),
https://doi.org/10.3390/condmat4020037 . .

TY  - JOUR
AU  - Damljanović, Vladimir
AU  - Popov, Igor
AU  - Gajic, Rados
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1063
AB  - Dirac-like electronic states are the main engines powering tremendous advancements in the research of graphene, topological insulators and other materials with these states. Zero effective mass, high carrier mobility and numerous applications are some consequences of linear dispersion that distinguishes Dirac states. Here we report a new class of linear electronic bands in two-dimensional materials with zero electron effective mass and sharp band edges, and predict stable materials with such electronic structures utilizing symmetry group analysis and an ab initio approach. We make a full classification of completely linear bands in two-dimensional materials and find that only two classes exist: Dirac fermions on the one hand and fortune teller-like states on the other hand. The new class supports zero effective mass similar to that of graphene and anisotropic electronic properties like that of phosphorene.
PB  - Royal Soc Chemistry, Cambridge
T2  - Nanoscale
T1  - Fortune teller fermions in two-dimensional materials
EP  - 19345
IS  - 48
SP  - 19337
VL  - 9
DO  - 10.1039/c7nr07763g
ER  - 

@article{
author = "Damljanović, Vladimir and Popov, Igor and Gajic, Rados",
year = "2017",
abstract = "Dirac-like electronic states are the main engines powering tremendous advancements in the research of graphene, topological insulators and other materials with these states. Zero effective mass, high carrier mobility and numerous applications are some consequences of linear dispersion that distinguishes Dirac states. Here we report a new class of linear electronic bands in two-dimensional materials with zero electron effective mass and sharp band edges, and predict stable materials with such electronic structures utilizing symmetry group analysis and an ab initio approach. We make a full classification of completely linear bands in two-dimensional materials and find that only two classes exist: Dirac fermions on the one hand and fortune teller-like states on the other hand. The new class supports zero effective mass similar to that of graphene and anisotropic electronic properties like that of phosphorene.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Nanoscale",
title = "Fortune teller fermions in two-dimensional materials",
pages = "19345-19337",
number = "48",
volume = "9",
doi = "10.1039/c7nr07763g"
}

Damljanović, V., Popov, I.,& Gajic, R.. (2017). Fortune teller fermions in two-dimensional materials. in Nanoscale
Royal Soc Chemistry, Cambridge., 9(48), 19337-19345.
https://doi.org/10.1039/c7nr07763g

Damljanović V, Popov I, Gajic R. Fortune teller fermions in two-dimensional materials. in Nanoscale. 2017;9(48):19337-19345.
doi:10.1039/c7nr07763g .

Damljanović, Vladimir, Popov, Igor, Gajic, Rados, "Fortune teller fermions in two-dimensional materials" in Nanoscale, 9, no. 48 (2017):19337-19345,
https://doi.org/10.1039/c7nr07763g . .

TY  - JOUR
AU  - Lucic, N
AU  - Jovic Savic, D
AU  - Piper, A
AU  - Grujic, D
AU  - Vasiljevic, J
AU  - Pantelic, D
AU  - Jelenkovic, B
AU  - Timotijević, Dejan
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2999
AB  - We investigate light propagation along one-dimensional quasi-periodic Fibonacci waveguide array optically induced in Fe:LiNbO3 crystal. Two Fibonacci elements, A and B, are used as a separation between waveguides. We demonstrate numerically and experimentally that a beam expansion in such arrays is effectively reduced compared to the periodic ones, without changing beam expansion scaling law. The influence of refractive index variation on the beam expansion in such systems is discussed: more pronounced diffraction suppression is observed for a higher refractive index variation.
T2  - Journal of the Optical Society of America B
T1  - Light propagation in quasi-periodic Fibonacci waveguide arrays
VL  - 32
DO  - https://doi.org/10.1364/josab.32.001510
ER  - 

@article{
author = "Lucic, N and Jovic Savic, D and Piper, A and Grujic, D and Vasiljevic, J and Pantelic, D and Jelenkovic, B and Timotijević, Dejan",
year = "2015",
abstract = "We investigate light propagation along one-dimensional quasi-periodic Fibonacci waveguide array optically induced in Fe:LiNbO3 crystal. Two Fibonacci elements, A and B, are used as a separation between waveguides. We demonstrate numerically and experimentally that a beam expansion in such arrays is effectively reduced compared to the periodic ones, without changing beam expansion scaling law. The influence of refractive index variation on the beam expansion in such systems is discussed: more pronounced diffraction suppression is observed for a higher refractive index variation.",
journal = "Journal of the Optical Society of America B",
title = "Light propagation in quasi-periodic Fibonacci waveguide arrays",
volume = "32",
doi = "https://doi.org/10.1364/josab.32.001510"
}

Lucic, N., Jovic Savic, D., Piper, A., Grujic, D., Vasiljevic, J., Pantelic, D., Jelenkovic, B.,& Timotijević, D.. (2015). Light propagation in quasi-periodic Fibonacci waveguide arrays. in Journal of the Optical Society of America B, 32.
https://doi.org/https://doi.org/10.1364/josab.32.001510

Lucic N, Jovic Savic D, Piper A, Grujic D, Vasiljevic J, Pantelic D, Jelenkovic B, Timotijević D. Light propagation in quasi-periodic Fibonacci waveguide arrays. in Journal of the Optical Society of America B. 2015;32.
doi:https://doi.org/10.1364/josab.32.001510 .

Lucic, N, Jovic Savic, D, Piper, A, Grujic, D, Vasiljevic, J, Pantelic, D, Jelenkovic, B, Timotijević, Dejan, "Light propagation in quasi-periodic Fibonacci waveguide arrays" in Journal of the Optical Society of America B, 32 (2015),
https://doi.org/https://doi.org/10.1364/josab.32.001510 . .

TY  - JOUR
AU  - Lucic, N
AU  - Bokic, B
AU  - Grujic, D
AU  - Pantelić, D. V
AU  - Jelenković, B. M
AU  - Piper, A
AU  - Jović, D. M
AU  - Timotijević, Dejan
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3016
AB  - We demonstrate both theoretically and experimentally that a finite Airy beam changes its trajectory and shape in optically induced waveguide arrays consisting of different kinds of defects. The propagation dynamics and beam acceleration are controlled with positive and negative defects, and appropriate refractive index change. An additional class of discrete beams and Airy defect modes are demonstrated.
T2  - Physical Review A
T1  - Defect-guided Airy beams in optically induced waveguide arrays
VL  - 88
DO  - https://doi.org/10.1103/physreva.88.063815
ER  - 

@article{
author = "Lucic, N and Bokic, B and Grujic, D and Pantelić, D. V and Jelenković, B. M and Piper, A and Jović, D. M and Timotijević, Dejan",
year = "2013",
abstract = "We demonstrate both theoretically and experimentally that a finite Airy beam changes its trajectory and shape in optically induced waveguide arrays consisting of different kinds of defects. The propagation dynamics and beam acceleration are controlled with positive and negative defects, and appropriate refractive index change. An additional class of discrete beams and Airy defect modes are demonstrated.",
journal = "Physical Review A",
title = "Defect-guided Airy beams in optically induced waveguide arrays",
volume = "88",
doi = "https://doi.org/10.1103/physreva.88.063815"
}

Lucic, N., Bokic, B., Grujic, D., Pantelić, D. V., Jelenković, B. M., Piper, A., Jović, D. M.,& Timotijević, D.. (2013). Defect-guided Airy beams in optically induced waveguide arrays. in Physical Review A, 88.
https://doi.org/https://doi.org/10.1103/physreva.88.063815

Lucic N, Bokic B, Grujic D, Pantelić DV, Jelenković BM, Piper A, Jović DM, Timotijević D. Defect-guided Airy beams in optically induced waveguide arrays. in Physical Review A. 2013;88.
doi:https://doi.org/10.1103/physreva.88.063815 .

Lucic, N, Bokic, B, Grujic, D, Pantelić, D. V, Jelenković, B. M, Piper, A, Jović, D. M, Timotijević, Dejan, "Defect-guided Airy beams in optically induced waveguide arrays" in Physical Review A, 88 (2013),
https://doi.org/https://doi.org/10.1103/physreva.88.063815 . .

TY  - JOUR
AU  - Vukovic, S.M
AU  - Aleksic, N
AU  - Timotijević, Dejan
AU  - Belic, M.R
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2996
AB  - We studied electromagnetic wave transmission through layered structures that include negative index materials. The excitation of leaky guided modes leads to the formation of anomalous lateral shifts in the reflected beam with a double-peak structure and in the transmitted beam with a single-peak structure. In the absence of losses, we demonstrate that the total transparency (i.e. zero reflection) of the slab waveguide with the negative index material can be achieved under conditions in which high reflectivity is normally expected. We demonstrate the trade-off effect between the high transmission and the high lateral shift. This peculiar effect exists not only for the pure TE or the pure TM polarization of the obliquely incident radiation, but also under certain circumstances for both of them simultaneously i.e. for the nonpolarized radiation.
T2  - Optics Communications
T1  - Lateral beam shift at transmission through layered structures with negative index material
VL  - 285
DO  - https://doi.org/10.1016/j.optcom.2011.11.083
ER  - 

@article{
author = "Vukovic, S.M and Aleksic, N and Timotijević, Dejan and Belic, M.R",
year = "2012",
abstract = "We studied electromagnetic wave transmission through layered structures that include negative index materials. The excitation of leaky guided modes leads to the formation of anomalous lateral shifts in the reflected beam with a double-peak structure and in the transmitted beam with a single-peak structure. In the absence of losses, we demonstrate that the total transparency (i.e. zero reflection) of the slab waveguide with the negative index material can be achieved under conditions in which high reflectivity is normally expected. We demonstrate the trade-off effect between the high transmission and the high lateral shift. This peculiar effect exists not only for the pure TE or the pure TM polarization of the obliquely incident radiation, but also under certain circumstances for both of them simultaneously i.e. for the nonpolarized radiation.",
journal = "Optics Communications",
title = "Lateral beam shift at transmission through layered structures with negative index material",
volume = "285",
doi = "https://doi.org/10.1016/j.optcom.2011.11.083"
}

Vukovic, S.M, Aleksic, N., Timotijević, D.,& Belic, M.R. (2012). Lateral beam shift at transmission through layered structures with negative index material. in Optics Communications, 285.
https://doi.org/https://doi.org/10.1016/j.optcom.2011.11.083

Vukovic S, Aleksic N, Timotijević D, Belic M. Lateral beam shift at transmission through layered structures with negative index material. in Optics Communications. 2012;285.
doi:https://doi.org/10.1016/j.optcom.2011.11.083 .

Vukovic, S.M, Aleksic, N, Timotijević, Dejan, Belic, M.R, "Lateral beam shift at transmission through layered structures with negative index material" in Optics Communications, 285 (2012),
https://doi.org/https://doi.org/10.1016/j.optcom.2011.11.083 . .

TY  - JOUR
AU  - Petrović, Suzana M
AU  - Perusko, Davor B
AU  - Radovic-Bogdanović, I
AU  - Branković, Goran
AU  - Cekada, M
AU  - Gaković, Biljana M
AU  - Jaksic, M
AU  - Trtica, Milan S
AU  - Milosavljević, Momir S
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/532
AB  - In this work we studied the influence of laser radiation on the composition, structure and morphology of WTi thin films deposited on n-type (100) silicon wafers. The films were deposited by d.c. sputtering from a 70:30 at% W-Ti target, using Ar ions, to a thickness of similar to 190 nm. Irradiation was performed with a pulsed Nd:YAG laser operating at 1064 nm, whereas the pulse duration was 150 ps. Laser fluences of 3.2 and 5.9 J/cm(2) were found to be sufficient for modification of the WTi/silicon target system. The results show: (i) ablation of WTi thin film and a Si substrate in the central zone of spots, (ii) appearance of hydrodynamic features like resolidified material, (iii) partial ablation of the WTi thin film at the periphery and (iv) appearance of thin film cracks at the far periphery. On the non-ablated areas, the laser modification induced changes in composition, such as inter-mixing of components at the WTi/Si interface with formation of silicides in both metals. Surface oxidation was the dominant process in the ablated areas, which is demonstrated by the presence of a SiO2 phase.
PB  - Korean Inst Metals Materials, Seoul
T2  - Metals and Materials International
T1  - Evaluation of the composition and morphology of a WTi/Si system processed by a picosecond laser
EP  - 463
IS  - 3
SP  - 457
VL  - 18
DO  - 10.1007/s12540-012-3012-4
ER  - 

@article{
author = "Petrović, Suzana M and Perusko, Davor B and Radovic-Bogdanović, I and Branković, Goran and Cekada, M and Gaković, Biljana M and Jaksic, M and Trtica, Milan S and Milosavljević, Momir S",
year = "2012",
abstract = "In this work we studied the influence of laser radiation on the composition, structure and morphology of WTi thin films deposited on n-type (100) silicon wafers. The films were deposited by d.c. sputtering from a 70:30 at% W-Ti target, using Ar ions, to a thickness of similar to 190 nm. Irradiation was performed with a pulsed Nd:YAG laser operating at 1064 nm, whereas the pulse duration was 150 ps. Laser fluences of 3.2 and 5.9 J/cm(2) were found to be sufficient for modification of the WTi/silicon target system. The results show: (i) ablation of WTi thin film and a Si substrate in the central zone of spots, (ii) appearance of hydrodynamic features like resolidified material, (iii) partial ablation of the WTi thin film at the periphery and (iv) appearance of thin film cracks at the far periphery. On the non-ablated areas, the laser modification induced changes in composition, such as inter-mixing of components at the WTi/Si interface with formation of silicides in both metals. Surface oxidation was the dominant process in the ablated areas, which is demonstrated by the presence of a SiO2 phase.",
publisher = "Korean Inst Metals Materials, Seoul",
journal = "Metals and Materials International",
title = "Evaluation of the composition and morphology of a WTi/Si system processed by a picosecond laser",
pages = "463-457",
number = "3",
volume = "18",
doi = "10.1007/s12540-012-3012-4"
}

Petrović, S. M., Perusko, D. B., Radovic-Bogdanović, I., Branković, G., Cekada, M., Gaković, B. M., Jaksic, M., Trtica, M. S.,& Milosavljević, M. S.. (2012). Evaluation of the composition and morphology of a WTi/Si system processed by a picosecond laser. in Metals and Materials International
Korean Inst Metals Materials, Seoul., 18(3), 457-463.
https://doi.org/10.1007/s12540-012-3012-4

Petrović SM, Perusko DB, Radovic-Bogdanović I, Branković G, Cekada M, Gaković BM, Jaksic M, Trtica MS, Milosavljević MS. Evaluation of the composition and morphology of a WTi/Si system processed by a picosecond laser. in Metals and Materials International. 2012;18(3):457-463.
doi:10.1007/s12540-012-3012-4 .

Petrović, Suzana M, Perusko, Davor B, Radovic-Bogdanović, I, Branković, Goran, Cekada, M, Gaković, Biljana M, Jaksic, M, Trtica, Milan S, Milosavljević, Momir S, "Evaluation of the composition and morphology of a WTi/Si system processed by a picosecond laser" in Metals and Materials International, 18, no. 3 (2012):457-463,
https://doi.org/10.1007/s12540-012-3012-4 . .