Lisesivdin Research Group (LRG) on Low-dimensional Materials and Devices is a research group within the sub-department of Condensed Matter Physics, which is part of the Department of Physics at Gazi University.

Our research is primarily focused on developing the physics and technology behind high-tech semiconductor devices which are mostly transistors. As material groups, we are interested in GaN-based materials, ZnO-based materials, graphene and black phosphorus. 

We are capable to conduct both experimental and calculations studies. More information about our facilities can be found here.


PhD student Gokhan Atmaca earned research scholarship

Mar 21 2016, by S. B. Lisesivdin
Gokhan Atmaca, who is a PhD student in our group, earned a TUBITAK 2214  international research scholarship. He will conduct his research project at Nitride Semiconductor Device Laboratory, which is located at Kyungpook University, South Korea. His research will continue for 8 months. Congratulations Gökhan! 

Publications in 2015!

Dec 31 2015, by G. Atmaca
We got 5 new publications in 2015:
  • S. Ardali, G. Atmaca, S. B. Lisesivdin, T. Malin, V. Mansurov, K. Zhuravlev, E. Tiras “The variation of temperature dependent carrier concentration and mobility in AlGaN/AlN/GaN heterostructure with SiN passivation” Phys. Stat. Sol. B 252, 1960 (2015).
  • I. Kara, S. B. Lisesivdin, M. Kasap, E. Er, U. Uzek “The Relationship between the Surface Morphology and Chemical Composition of Gunshot Residue Particles” J. Foren. Sci. 60, 1030 (2015).
  • B. Sarikavak-Lisesivdin, S. B. Lisesivdin, N. Balkan, G. Atmaca, P. Narin, H. Cakmak, E. Ozbay “Energy relaxation of electrons in InGaN quantum wells” Metall. Mater. Trans. A 46, 1565 (2015).
  • G. Atmaca, P. Narin, B. Sarikavak-Lisesivdin, S. B. Lisesivdin, M. Kasap “Electron Transport Properties of Two Dimensional Electron Gas in BexZn1-xO/ZnO Heterostructures” Philos. Mag.95, 79 (2015).
  • G. Atmaca, P. Tasli, G. Karakoc, E. Yazbahar and S. B. Lisesivdin “Numerical Investigation of the 2DEG Properties of AlGaN/AlN/GaN HEMT Structures with InGaN/GaN MQW Back-Barrier Structure” Physica E 65, 110 (2015).
Thanks to all colleagues, who made these publications possible.

Lisesivdin Earns IEEE Senior Membership

Aug 29 2015, by Dr. S. B. Lisesivdin
Sefer Bora Lisesivdin, has been recently elevated to the grade of Senior Member of the IEEE. Senior Member is the highest professional grade of the IEEE for which a member may apply and only about 7 percent of IEEE’s 430,000 members have achieved this level.

To be eligible for Senior Member status, IEEE members must be engineers, scientists, educators, technical executives, or originators in IEEE-designated fields with at least 10 years experience; have experience reflecting professional maturity; and show significant performance over a period of at least five of their years in professional practice.

IEEE is the world’s largest professional association dedicated to advancing technological innovation and excellence for the benefit of humanity. IEEE and its members inspire a global community through IEEE’s highly cited publications, conferences, technology standards, and professional and educational activities.

New Website

Apr 09 2015, by Dr. S. B. Lisesivdin
Our group will continue its studies as Gazi University Physics Department Lisesivdin Research Group (LRG).

Dr. Beyza Lisesivdin Earned Associate Professor Title

Mar 16 2015, by Dr. S. B. Lisesivdin
Dr. Beyza Lişesivdin received the rank of Associate Professor from the Turkish Inter-University Council (UAK) this monday. Congratulations!

New Grant Received From TUBITAK

Mar 15 2015, by Dr. S. B. Lisesivdin
Dr. Beyza Lisesivdin received a grant from The Scientific and Technological Research Council of Turkey (TUBITAK) . Project is about investgation of the relationship between the properties of two-dimensional electronic gas and the surface structure of ultrathin barrier GaN-based High Electron Mobility Transistors (HEMTs). Project will be held between 2014-2016 and today project is started.

New Article published in Physica E

2014-09-26 14:33, by G. Atmaca

Our recent work about 2DEG properties of AlGaN/AlN/GaN HEMT structures with InGaN/GaN MQW back-barrier structure got published in Physica E : Low-dimensional Systems and Nanostructures. http://dx.doi.org/10.1016/j.physe.2014.09.004.

Version 1.0 and the elementary version of Aestimo solver are released!

2014-08-29 22:21, by Dr. S. B. Lisesivdin

Aestimo Team is proud to release the version 1.0 of Aestimo 1D Self-consistent Schrödinger-Poisson Solver. This version includes many bugfixes, new organization of the structure, wurtzite material using, lots of change in intersubband optical transitions module. Dielectric constants are now handled more accurately. Many tutorials are added in the form of an ipython notebooks. Code is heavily modified and stabilized with more than 60 commits. This version is the most feature rich and stable version so ever. For more please visit release notes. Also another aestimo version, which is called “elementary” is released. This version is easy to understand in terms of coding, and therefore it can be used in undergraduate/graduate courses and forking new solvers. There will be no any other release for the “elementary” version. We are always open to your contributions. Please use it, issue a bug, help to write use a better user’s manual or commit to source!

Dr. Sarikavak-Lisesivdin and Dr. Lisesivdin earned publication and citation awards

2014-06-14 10:10, by NDCT

Dr. Sarikavak-Lisesivdin and Dr. Lisesivdin earned publication and citation awards from Gazi University. Awards are presented in the ceremony which is held at June 23rd, 2014 at Gazi University, Ankara. Click here for pictures.

Dr. Lisesivdin earned young scientist award

2014-06-14 10:10, by NDCT

Turkish Society of Physics has awarded Dr. Lisesivdin with the 2014 YEAR OF TURKISH SOCIETY OF PHYSICS PROF. DR. SEVKET ERK YOUNG SCIENTIST AWARD. Award will be presented at the TPS 31. International Physics Congress which will be held at Bodrum, Turkey at July 21st-24th 2014.

New Article published in Physica E

2014-05-26 18:12, by Dr. S. B. Lisesivdin

Our recent work about extraction of mixed conduction in graphene-on-SiC systems got published in Physica E : Low-dimensional Systems and Nanostructures.

New grant received from TUBITAK/RFBR 2532 coded international collaboration programme

2014-02-07 22:23, by Dr. S. B. Lisesivdin

We received the joint grant of Scientific and Technological Research Council of Turkey (TUBITAK) and RFBR of Russia. Project is about manipulation of the properties of two-dimensional electronic gas using insitu surface passivation of AlGaN/GaN heterostructures by molecular beam epitaxy and will be held between 2014-2016. Dr. Lisesivdin will be the project investigator of the project.