Ֆիզիկայի ֆակուլտետ
Faculty of Physics
The process of training specialists in the field of physics and mathematics began in 1922 in YSU.:
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Artak A. Avetisyan

Researcher | Faculty of Physics
Education
Ph.D. in Solid State Physics, July 2000.
Ph.D. student, Department of Physics, Yerevan State University, 1997 to 2000.
M. Sc. (Diploma with honour) - Department of Physics, Yerevan State University, 1997

Work experience
Research fellowship "Nonlinear Optical Properties of Low Dimensional Semiconductor Systems" at the Department of Theoretical Physics of Bremen University, Germany (2001).
Post Doctoral position in the program “Novel Electronic States and Quantum Phase Transitions Induced by a Magnetic Field in Two-Dimensional Nanostructures” at the Department of Physics of the Cyprus University (2003 – 2005).
Post Doctoral position in the program “Transport in Graphene” at the Condensed Matter Theory group, University of Antwerp (2008 – 2010).
Researcher at the chair of Solid State Physics, Yerevan State University from 1999 at the present.
Lecturer (docent), courses in “nanophysics” and “ semiconductor heterojunctions”.

Research experience
Phase transitions induced by a magnetic field in nanostructures. Few electron systems in quantum dots: Wigner molecules and broken-symmetry phase with spin-singlet configuration.
Excitons, exciton-donor complexes, and impurity states in semiconductor nanostructures in external fields.
Nonlinear optical properties of low dimensional semiconductor systems: biexcitonic transitions in quantum wells in the field of short laser pulses. Coherent phenomena in quantum dots induced by laser pulses.
Optical properties of semiconductor nanostructures with nonparabolic dispersion law of charge carriers (Kane's dispersion law) and Aharonov-Bohm effect in such semiconductor nanorings.
Impurity states near semiconductor-insulator-metal interface in external electric and magnetic fields.
Electronic and nonlinear optical properties of multilayer graphene systems in the presence of external electric field.

Scientific interests
Transport and nonlinear optical properties of multilayer graphene systems.
Electron-electron interaction in nanosructures.
Phase transitions of electron-hole system in graphene multilayers:
the formation of Bose-Einstein condensate of excitons and exciton polaritons.
Wigner crystal and paired electron phases in graphene systems in magnetic field

Languages
Armenian, Russian, English, Greek, German

artakav@ysu.am

Latest Publications (71)
Interaction of Electromagnetic Field with Gated Graphene Bilayer
2019 | Article
Armenian Journal of Physics, 12, 1, 2019, 33-39 էջ
Tunable Excitons in Bilayer Graphene with Opened Energy Gap
2018 | Article
Physics of Atomic Nuclei, 81, 6,2018, 799-803 էջ
Excitonic absorption in gapped graphene systems (Էքսիտոնային կլանումը գրաֆենի համակարգերում՝ բացված էներգիական ճեղքի առկայությամբ)
2017 | Article
ԵՊՀ գիտական տեղեկագիր, Ֆիզիկա և մաթեմատիկա, 2017, հ. 51, #1, էջ 93–96
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A. Avetisyan , A. Djotyan, K. Moulopoulos
Tunable excitonic absorption in gapped graphene systems
2017 | Thesis
Laser Physics 2017. 2017, 37-38 pp.
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A. A. Avetisyan , A. A. Djotyan, K. Moulopoulos
Tunable excitons in gated graphene systems
2017 | Article
Proceedings of SPIE-Progress in Biomedical Optics and Imaging, 2017, 10337, 1033703, 1-11 pp.
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Bin Li, A.P. Djotyan , Y.L. Hao, A.A. Avetisyan , F. M. Peeters
Effect of a perpendicular magnetic field on the shallow donor states near a semiconductor-metal interface
2013 | Article
Phys. Rev. B 87, 075313-9 (2013)
A.A Avetisyan , B. Partoens, F.M. Peeters
Stacking order dependent Electric field tuning of the band gap in graphene multilayers
2011 | Article
The International Workshop Photonics&Micro- and Nano-structured Materials “PMNM-2011”, June 28-30, 2011, Yerevan, Armenia (oral presentation)
Shallow donor near semiconductor surface in the presence of a STM tip
2011 | Article
The International Workshop Photonics&Micro- and Nano-structured Materials “PMNM-2011”, June 28-30, 2011, Yerevan, Armenia (oral presentation)
A. P. Djotyan , A. A. Avetisyan , Y. L. Hao, F. M. Peeters
Shallow donor near a semiconductor surface in the presence of locally spherical scanning tunneling microscope tip
2011 | Article
Proc. SPIE 8414, 84140L (2011); http://dx.doi.org/10.1117/12.923562
A. A. Avetisyan , B. Partoens, F. M. Peeters
Electric field tuning of the band gap in four layers of graphene with different stacking order
2011 | Article
Proc. SPIE 8414, 84140D (2011). http://dx.doi.org/10.1117/12.923618
Y.L.Hao, A.P.Djotyan , A.A.Avetisyan , F.M.Peeters
D− shallow donor near a semiconductor-metal and a semiconductor-dielectric interface
2011 | Article
J. Phys.: Condens. Matter 23, 115303 (9pp), (2011)
A.A. Avetisyan , A.V. Ghazaryan, A.P. Djotyan , A.A. Kirakosyan , K. Moulopoulos
Optical properties of magnetoexcitons in semiconductor quantum rings with narrow bandgap
2010 | Thesis
Abstracts of the XXXIX International School and Conference on the Physics of Semiconductors - "Jaszowiec-2010" (19-24 June 2010) p. TuP 11, Poland
A.V.Ghazaryan, A.A. Avetisyan , A.P.Djotyan , A.A.Kirakosyan , K.Moulopoulos
Optical properties of magnetoexcitons in narrow bandgap semiconductor quantum rings”
2010 | Article
Program of the International Conference “Laser Physics-2009” (13-16 October 2009), PS3-08, Ashtarak, Armenia. Proceedings of the International Conferernce “Laser Physics-2009” (2010) p. 121-126
A.A.Avetisyan , B.Partoens, F. M. Peeters
Stacking order dependent Electric field tuning of the band gap in graphene multilayers
2010 | Article
Phys. Rev. B 81, p 115432-10, (2010).
Shallow D- states near different interfaces
2009 | Thesis
International Conference “Laser Physics-2009” , 13-16 October 2009, Ashtarak, Armenia (oral presentation)
A.A.Avetisyan , A.V.Ghazaryan, A.P.Djotyan , A.A.Kirakosyan , K.Moulopoulos
Magnetoexcitons in semiconductor quantum rings with complicated (Kane’s) dispersion law
2009 | Article
Abstracts of the International Conference on the Physics of Semiconductors - "Jaszowiec-2009" Poland, 19-26 June, (2009) p. MoP 38
Y.L.Hao, A.P.Djotyan , A.A.Avetisyan , F.M.Peeters
Shallow D- states near semiconductor-metal interface
2009 | Thesis
Abstracts of International Conference “ DyProSo” 2009, Belgium, Antwerpen, p. 27
Y.L.Hao, A.P.Djotyan , A.A.Avetisyan , F.M.Peeters
Shallow donor states near a semiconductor-insulator-metal interface C29
2009 | Thesis
The Abstracts of Joint General Scientific meeting 2009 , Universiteit Hasselt, Belgium, April 1 (2009) p.5
A.A.Avetisyan , B.Partoens, F.M. Peeters
Graphene multilayers with different stacking orders
2009 | Article
International Conference “Laser Physics-2009” , 13-16 October 2009, Ashtarak, Armenia (oral presentation)
Shallow D- states near semiconductor-metal and semiconductor-dielectric interfaces
2009 | Article
Abstracts of International Conference “Jaszowiec 2009”, June 19-26, Poland, (poster Th1)
A.A. Avetisyan , B. Partoens, F. M. Peeters
Electric Field control of the Band Gap and Fermi Energy in Graphene Multilayers by Top and Back Gates
2009 | Article
The International conference on the Physics of Semiconductor Compounds “Jaszowiec 2009”, June 19-26, Poland (oral presentation)
A.A.Avetisyan , B.Partoens, F.M.Peeters
Electric Field control of the Band Gap and Fermi Energy in Graphene Multilayers by Top and Back Gates
2009 | Article
Phys. Rev. B 80, p 195401-11, (2009).
( has been selected for the November 23, 2009, issue of Virtual Journal of Nanoscale Science & Technology http://www.vjnano.org)
A.A.Avetisyan , B. Partoens, F. M. Peeters
Electric field tuning of the band gap in graphene multilayers
2009 | Thesis
Phys. Rev. B 79, p 035421-7, (2009).
( has been selected for the February 9, 2009, issue of Virtual Journal of Nanoscale Science & Technology http://www.vjnano.org)
Y.L.Hao, A.P.Djotyan , A.A.Avetisyan , F.M.Peeters
Shallow donor states near a semiconductor-insulator-metal interface
2009 | Thesis
Phys. Rev. B 80, p. 035329-10, (2009)
A.A.Avetisyan , A.V.Ghazaryan, A.P.Djotyan , A.A.Kirakosyan , K.Moulopoulos
Magnetoexcitons in Semiconductor Quantum Rings with Complicated (Kane’s) Dispersion Law
2009 | Thesis
Acta Physica Polonica A.116, p.826, (2009)
A.A. Avetisyan , B. Partoens, F. M. Peeters
Electric field tuning of the band gap in graphene multilayers
2008 | Article
The International Workshop “Graphene week” 2008- Electronic Properties of Graphene-Based Nanostructures, ICTP, Trieste, Italy, Aug 25-30 (2008)
A.A.Avetisyan , B. Partoens, F. M. Peeters
Electric Field Induced Gaps in Graphene Multilayers
2008 | Article
Abstract of Belgian Physical Society (BPS) General Scientific Meeting, ULB, May 21, (2008) p.17
Few-electron systems in a quantum dot in a magnetic field: Wigner phase and broken symmetry spin-singlet state
2008 | Article
Nanotechnology Perceptions 4, pp. 1-10 (2008)
Phase Transitions in a Few-Electron Quantum Dot in a Magnetic Field: Wigner Phase and Broken-Symmetry Spin-Singlet States
2008 | Article
Physics of Atomic Nuclei, 2008, 71, No. 5, pp. 800–806 (2008)
Competing broken-symmetry and rotationally symmetric spin-singlet states in a few-electron quantum dot in a magnetic field
2008 | Thesis
Physica E 40, 1637 (2008)
A.A.Avetisyan , A.P. Djotyan , E.M. Kazaryan, K. Moulopoulos
Exciton - donor complexes in semiconductor quantum dots in a magnetic field: infinite and finite potential barriers
2008 | Thesis
Physica E 40, 1648 (2008)
Phase transitions in a few-electron quantum dot in a magnetic field: Wigner phase and broken-symmetry spin-singlet state
2008 | Thesis
Yadernaya Fizika, 71, No 5, 1 (2008)
A few- electron system in a 2D quantum dot in a magnetic field: Wigner phases and broken-symmetry spin-singlet state
2007 | Article
Abstracts of International Conference “Spin electronics: Novel physical phenomenon and materials” Tbilisi, Georgia, October 22-24, 2007, pp 31-32, Tbilisi State University (2007)
Coulomb repulsive correlation in A(3)B(5) semiconductor quantum dots in the presence of a magnetic field
2006 | Article
Phys. Stat. Sol. (c), 3, No 3, 532-535 (2006)
Exciton - donor complexes in semiconductor quantum dots in a magnetic field: infinite and finite potential barrier
2006 | Article
The Abstracts of International Conference“New Technologies for Development of Semiconductor Heterostructure for Device Applications” September 21- 23, p. 15, Yerevan, Armenia (2006)
Interband light absorption in semiconductor quantum dots in a magnetic field connected with exciton - donor complexes
2006 | Article
The Abstracts of International conference on the Physics of Semiconductor Compounds “Jaszowiec 2006”, June 17-23, p.134, Poland 2006
G.P. Djotyan , J.S. Bakos, Zs. Sörlei, J. Szigeti, D. Dzsotjan, A.P. Djotyan , A.A. Avetisyan
Coherent generation of superposition quantum states by short frequency-chirped laser pulses
2006 | Article
Proceedings of International Conference “Laser Physics-2006”, Ashtarak (2006), Armenia p.85-88
Coulomb repulsive correlation in A(3) B(5)semiconductor quantum dots in the presence of a magnetic field
2006 | Article
Phys. Stat. Sol. (c), 3, No 3, 532-535 (2006).
G.P. Djotyan, J.S. Bakos, Zs. Sörlei, J. Szigeti, D. Dzsotjan, A.P. Djotyan , A.A. Avetisyan
Coherent generation of superposition quantum states by short frequency-chirped laser pulses
2006 | Article
Proceedings of International Conference “Laser Physics-2006”, Ashtarak, Armenia p.85-88. (2006)
M.Szot, K.Karpierz, A.Avetisyan , A. Djotyan , J.Kossut , M.Grynberg
The nature of potential fluctuations in the MBE CdTe/CdMgTe quantum well in a magnetic field: theory and experiment
2006 | Article
J. Acta Physica Polonica 110, No3, pp 379-387 (2006)
A.A.Avetisyan , A.P.Djotyan , E.M.Kazaryan , K.Moulopoulos
Exciton-donor complexes in a semiconductor quantum dot in a magnetic field
2006 | Article
Phys. Stat. Sol. (c) 3, No. 4, pp. 1087–1090 (2006)
A.A.Avetisyan , K.Moulopoulos
Few-Electron Systems in a Quantum Dot in a Magnetic Field: the Wigner Molecule and Paired Electron Phases
2006 | Article
Phys. Stat. Sol. (c) 3, No. 4, pp. 1095–1098 (2006)
Coulomb repulsive correlation in systems with radial confinement: quantum dots and the Overhauser model in an external magnetic field
2006 | Article
J. Philosophical Magazine, 86, pp. 2493-2509 (2006)
Coulomb repulsive correlation in semiconductor quantum dots in the presence of a magnetic field
2005 | Thesis
The Abstracts of International Conference on Semiconductor Compounds (ISCS-2005), Freiburg, Germany, 2005 p. MoP 28
Exciton-donor complexes in semiconductor quantum dots in a magnetic field.
2005 | Article
The Abstracts of International conference on the Physics of Semiconductor Compounds “Jaszowiec 2005”, June 1-10, Poland , p.113 (2005)
A A. Avetisyan , A. P. Djotyan , E.M.Kazaryan , K.Moulopoulos
The binding energy of an exciton-donor complex in a quantum dot in a magnetic field
2005 | Article
The Abstracts of 12 th International Conference on II-VI Compounds, Warsaw 2005, p. Mon-P-21
Exciton-Donor complexes in a semiconductor quantum dot in a magnetic field
2005 | Article
The Proceedings of the Fifth International Conference "Semiconductor Microelectronics", Agveran , September 16-18, pp.177-180 (2005)
Negative ion-electron states in a semiconductor quantum dot in a magnetic field
2005 | Article
The Proceedings of the Fifth International Conference "Semiconductor Microelectronics", Agveran , September 16-18, pp. 173-176 (2005).
Coulomb repulsive correlation in A(3) B(5)semiconductor quantum dots in the presence of a magnetic field
2005 | Thesis
The Abstracts of International Conference on Semiconductor Compounds (ISCS-2005), Freiburg, Germany, 2005 p. MoP 28
The luminescence properties of the colloidal GaAs and CdS semiconductor quantum dots
2005 | Article
Laser Phys. Lett. 2, No. 1, pp. 12–15 (2005)
Coulomb repulsive correlation in quantum dot in external magnetic field
2004 | Article
The Abstracts of XXXIII International conference on The Physics of Semiconductor Compounds “Jaszowiec 2004”, May 29-June 4, p. 31, (2004)
Coulomb repulsive correlation in systems with radial confinement: quantum dots and the Overhauser model in an external magnetic field
2004 | Thesis
The Abstracts of Third International workshop on Electron Correlations and Materials Properties, Kos, Greece, July 5-9 (2004)
Interband light absorption in semiconductor quantum dots connected with the charged and neutral exciton- donor complexes
2004 | Article
J. Key Engineering Materials, vol. 277-279, 893-898 (2004)
Phase transitions in a few-electron quantum dot in a magnetic field: Wigner phases and broken-symmetry spin-singlet state
2003 | Article
Abstracts of X International Conference on Symmetry Methods in Physics, August 13-19, 2003, Armenia, Yerevan State University, p.10
Interband Light absorption in Semiconductor quantum dots connected with the charged and neutral exciton- donor complexes
2003 | Thesis
Abstracts of the International Conference on BIEN-Technology ” The Converging of Bio, Information, Environment, Energy, Space and Nano Technology”, November 13-16, p.114, 2003, Daejon, Korea
Hydrogen-like impurity states in A(3)B(5) quantum wire in a strong magnetic field
2003 | Article
Abstracts of X International Conference on Symmetry Methods in Physics, August 13-19, 2003, Armenia, Yerevan State University, p.10
Light absorption in semiconductor quantum dots
2003 | Article
The Proceedings of IV National Conference “Semiconductor Nanoelectronics” Tsakhkadzor, May 29-31, pp.23-29, Yerevan , 2003
Exciton-Donor Complexes in a Semiconductor Quantum Dot
2003 | Article
Phys. Stat. Sol. (c) 0, pp. 734-739 (2003)
Exciton-donor complexes in a semiconductor quantum dot
2002 | Article
The Abstracts of the 10th International Conference on Shallow-Level Centers in Semiconductors, (SLCS-10) Warsaw - Poland, July 24-27, 2002, ThP-5, p.29
Exciton-donor complexes in a semiconductor quantum dot
2002 | Thesis
The Abstracts of the 12th Conference of the European Physical Society, EPS-12 (General Trends in Physics), Budapest, August 26-30, 2002, vol. 26G, P2-16, p.335, published by European Physical Society (2002)
Impurity light absorption in thin Semiconductor wires A(3)B(5)-type
2001 | Article
Proceedings of The Third National Conference ”Semiconductor Microelectronics" Sevan, September 10-12, 2001, pp. 67-71
Binding energy of hydrogen-like impurities in a thin semiconductor wire with complicated dispersion law in a magnetic field
2001 | Article
Phys. Stat. Sol. (b), 225, No 2, pp. 423-431 (2001)
Impurity light absorption in InSb quantum well wire
2000 | Article
The Abstract of the SLCS-9, the 9th International Conference on Shallow-Level Centers in Semiconductors, September 24-27, 2000, Japan, MoP-46, p.159
A.A.Avetisyan , A.P.Djotyan , E.M.Kazaryan, D.G.Pogosyan
Binding energy of hydrogen-like impurities in a thin semiconductor wire with complicated dispersion law
2000 | Article
Phys. Stat. Sol. (b), 218, pp.441-447 (2000)
Impurity states in thin wires with parabolic potential in narrow band-gap semiconductors in a high magnetic field
1999 | Article
Proceedings of The Second National Conference ”Semiconductor Microelectronics" Dilijan, May 21-24, 1999, pp. 83-86
A.A.Avetisyan , E.M.Kazaryan, H.A.Sarkisyan
Hydrogenlike impurity states in A(3)B(5) quantum dot.
1999 | Article
Izvestia NAN. Armenii, Fizika, 35 (1999)
A.A.Avetisyan , A.P.Djotyan , E.M.Kazaryan, H.A.Sarkisyan
Relativistic hydrogen atom in strong magnetic field
1999 | Article
Izvestia NAN. Armenii, Fizika, 34, 1, p.24-28, (1999).( Journal of Contemporary Physics of Armenian Academy of Sciences)
A.A.Avetisyan , A.P.Djotyan , E.M.Kazaryan, H.A.Sarkisyan
Impurity states in narrow band-gap semiconductor in a high magnetic field
1999 | Article
Phys. Stat. Sol. (b) 214, p.91-95 (1999)
A.A.Avetisyan , A.P.Djotyan , E.M.Kazaryan, H.A.Sarkisyan
Impurity states in narrow band-gap semiconductor in a high magnetic field
1998 | Thesis
Program and Abstracts 8-th International Conference on Shallow-Level Centers in Semiconductors SLCS-98, Monpellier, Franse, Julay 27-30, 1998, P1-10
Interband light absorption in thin semiconductor films with narrow forbidden band in crossed electric and magnetic fields
1998 | Article
Izvestia NAN. Arm. SSR, Fizika 34, 2 , p.87-92, (1998)
Interband light absorption in semiconductors with narrow forbidden band in crossed electric and magnetic fields
1998 | Article
Izvestia NAN. Arm. SSR, Fizika, 33, 6, p. 296-304 (1998)