Artak A. Avetisyan
Biography
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

Artak A. Avetisyan

Researcher | Faculty of Physics - Solid State Physics Research Laboratory
 
 

Article

A. P. Djotyan, A. A. Avetisyan, K. Moulopoulos

Interaction of Electromagnetic Field with Gated Graphene Bilayer | Armenian Journal of Physics, 12, 1, 2019, 33-39 էջ

A. A. Avetisyan, A. P. Djotyan, K. Moulopoulos

Tunable Excitons in Bilayer Graphene with Opened Energy Gap | Physics of Atomic Nuclei, 81, 6,2018, 799-803 էջ

A. P. Djotyan, A. A. Avetisyan

Excitonic absorption in gapped graphene systems (Էքսիտոնային կլանումը գրաֆենի համակարգերում՝ բացված էներգիական ճեղքի առկայությամբ) | ԵՊՀ գիտական տեղեկագիր, Ֆիզիկա և մաթեմատիկա, 2017, հ. 51, #1, էջ 93–96 |

A. A. Avetisyan, A. A. Djotyan, K. Moulopoulos

Tunable excitons in gated graphene systems | Proceedings of SPIE-Progress in Biomedical Optics and Imaging, 2017, 10337, 1033703, 1-11 pp. |

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 | 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 | 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, F. M. Peeters

Shallow donor near semiconductor surface in the presence of a STM tip | 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 | 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 | 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 | J. Phys.: Condens. Matter 23, 115303 (9pp), (2011)

A.V.Ghazaryan, A.A. Avetisyan , A.P.Djotyan, A.A.Kirakosyan , K.Moulopoulos

Optical properties of magnetoexcitons in narrow bandgap semiconductor quantum rings” | 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 | Phys. Rev. B 81, p 115432-10, (2010).

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 | Abstracts of the International Conference on the Physics of Semiconductors - "Jaszowiec-2009" Poland, 19-26 June, (2009) p. MoP 38

A.A.Avetisyan, B.Partoens, F.M. Peeters

Graphene multilayers with different stacking orders | International Conference “Laser Physics-2009” , 13-16 October 2009, Ashtarak, Armenia (oral presentation)

Y.L.Hao, A.P.Djotyan, A.A.Avetisyan

Shallow D- states near semiconductor-metal and semiconductor-dielectric interfaces | 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 | 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 | 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 | 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 | Abstract of Belgian Physical Society (BPS) General Scientific Meeting, ULB, May 21, (2008) p.17

A.A.Avetisyan, K.Moulopoulos, A.P.Djotyan

Few-electron systems in a quantum dot in a magnetic field: Wigner phase and broken symmetry spin-singlet state | Nanotechnology Perceptions 4, pp. 1-10 (2008)

A.A. Avetisyan, K.Moulopoulos, A.P.Djotyan

Phase Transitions in a Few-Electron Quantum Dot in a Magnetic Field: Wigner Phase and Broken-Symmetry Spin-Singlet States | Physics of Atomic Nuclei, 2008, 71, No. 5, pp. 800–806 (2008)

A.A.Avetisyan, K. Moulopoulos , A.P. Djotyan

A few- electron system in a 2D quantum dot in a magnetic field: Wigner phases and broken-symmetry spin-singlet state | Abstracts of International Conference “Spin electronics: Novel physical phenomenon and materials” Tbilisi, Georgia, October 22-24, 2007, pp 31-32, Tbilisi State University (2007)

A.A.Avetisyan, A.P.Djotyan, K.Moulopoulos

Coulomb repulsive correlation in A(3)B(5) semiconductor quantum dots in the presence of a magnetic field | Phys. Stat. Sol. (c), 3, No 3, 532-535 (2006)

A.A.Avetisyan, A.P.Djotyan , E.M.Kazaryan

Exciton - donor complexes in semiconductor quantum dots in a magnetic field: infinite and finite potential barrier | The Abstracts of International Conference“New Technologies for Development of Semiconductor Heterostructure for Device Applications” September 21- 23, p. 15, Yerevan, Armenia (2006)

A.A. Avetisyan, K.Moulopoulos , A.P. Djotyan

Interband light absorption in semiconductor quantum dots in a magnetic field connected with exciton - donor complexes | 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 | Proceedings of International Conference “Laser Physics-2006”, Ashtarak (2006), Armenia p.85-88

A.A.Avetisyan, A.P.Djotyan, K.Moulopoulos

Coulomb repulsive correlation in A(3) B(5)semiconductor quantum dots in the presence of a magnetic field | 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 | 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 | 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 | 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 | Phys. Stat. Sol. (c) 3, No. 4, pp. 1095–1098 (2006)

A.A.Avetisyan, K.Moulopoulos , A.P.Djotyan

Coulomb repulsive correlation in systems with radial confinement: quantum dots and the Overhauser model in an external magnetic field | J. Philosophical Magazine, 86, pp. 2493-2509 (2006)

A.A.Avetisyan, K.Moulopoulos , A.P.Djotyan

Exciton-donor complexes in semiconductor quantum dots in a magnetic field. | 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 | The Abstracts of 12 th International Conference on II-VI Compounds, Warsaw 2005, p. Mon-P-21

A.A.Avetisyan, A.P. Djotyan , K.Moulopoulos

Exciton-Donor complexes in a semiconductor quantum dot in a magnetic field | The Proceedings of the Fifth International Conference "Semiconductor Microelectronics", Agveran , September 16-18, pp.177-180 (2005)

A.A.Avetisyan, K.Moulopoulos , A.P. Djotyan

Negative ion-electron states in a semiconductor quantum dot in a magnetic field | The Proceedings of the Fifth International Conference "Semiconductor Microelectronics", Agveran , September 16-18, pp. 173-176 (2005).

A.Lalayan, A.A.Avetisyan , A.P.Djotyan

The luminescence properties of the colloidal GaAs and CdS semiconductor quantum dots | Laser Phys. Lett. 2, No. 1, pp. 12–15 (2005)

A.A.Avetisyan, K.Moulopoulos , A.P. Djotyan

Coulomb repulsive correlation in quantum dot in external magnetic field | The Abstracts of XXXIII International conference on The Physics of Semiconductor Compounds “Jaszowiec 2004”, May 29-June 4, p. 31, (2004)

A.A.Avetisyan, A.P.Djotyan , E.M.Kazaryan

Interband light absorption in semiconductor quantum dots connected with the charged and neutral exciton- donor complexes | J. Key Engineering Materials, vol. 277-279, 893-898 (2004)

A.A.Avetisyan, A.P. Djotyan , K. Moulopoulos

Phase transitions in a few-electron quantum dot in a magnetic field: Wigner phases and broken-symmetry spin-singlet state | Abstracts of X International Conference on Symmetry Methods in Physics, August 13-19, 2003, Armenia, Yerevan State University, p.10

A. Avetisyan, A.P. Djotyan , E.M.Kazaryan

Hydrogen-like impurity states in A(3)B(5) quantum wire in a strong magnetic field | Abstracts of X International Conference on Symmetry Methods in Physics, August 13-19, 2003, Armenia, Yerevan State University, p.10

A. Avetisyan, A.P. Djotyan , E.M.Kazaryan

Light absorption in semiconductor quantum dots | The Proceedings of IV National Conference “Semiconductor Nanoelectronics” Tsakhkadzor, May 29-31, pp.23-29, Yerevan , 2003

A.A.Avetisyan, A.P.Djotyan , E.M.Kazaryan

Exciton-Donor Complexes in a Semiconductor Quantum Dot | Phys. Stat. Sol. (c) 0, pp. 734-739 (2003)

A.A. Avetisyan, A.P. Djotyan , E.M.Kazaryan

Exciton-donor complexes in a semiconductor quantum dot | 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

A.A.Avetisyan, A.P.Djotyan

Impurity light absorption in thin Semiconductor wires A(3)B(5)-type | Proceedings of The Third National Conference ”Semiconductor Microelectronics" Sevan, September 10-12, 2001, pp. 67-71

A.A.Avetisyan, A.P.Djotyan, E.M.Kazaryan

Binding energy of hydrogen-like impurities in a thin semiconductor wire with complicated dispersion law in a magnetic field | Phys. Stat. Sol. (b), 225, No 2, pp. 423-431 (2001)

A.A.Avetisyan, A.P.Djotyan

Impurity light absorption in InSb quantum well wire | 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 | Phys. Stat. Sol. (b), 218, pp.441-447 (2000)

A.A.Avetisyan

Impurity states in thin wires with parabolic potential in narrow band-gap semiconductors in a high magnetic field | 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. | 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 | 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 | Phys. Stat. Sol. (b) 214, p.91-95 (1999)

A.Avetisyan, A.P.Djotyan, B.G.Pogosyan

Interband light absorption in thin semiconductor films with narrow forbidden band in crossed electric and magnetic fields | Izvestia NAN. Arm. SSR, Fizika 34, 2 , p.87-92, (1998)

A.Avetisyan, A.P.Djotyan, B.G.Pogosyan

Interband light absorption in semiconductors with narrow forbidden band in crossed electric and magnetic fields | Izvestia NAN. Arm. SSR, Fizika, 33, 6, p. 296-304 (1998)
 

Thesis

A. Avetisyan, A. Djotyan, K. Moulopoulos

Tunable excitonic absorption in gapped graphene systems | Laser Physics 2017. 2017, 37-38 pp. |

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 | Abstracts of the XXXIX International School and Conference on the Physics of Semiconductors - "Jaszowiec-2010" (19-24 June 2010) p. TuP 11, Poland

A.P.Djotyan, A.A.Avetisyan, F.M. Peeters

Shallow D- states near different interfaces | International Conference “Laser Physics-2009” , 13-16 October 2009, Ashtarak, Armenia (oral presentation)

Y.L.Hao, A.P.Djotyan, A.A.Avetisyan, F.M.Peeters

Shallow D- states near semiconductor-metal interface | 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 | The Abstracts of Joint General Scientific meeting 2009 , Universiteit Hasselt, Belgium, April 1 (2009) p.5

A.A.Avetisyan, B. Partoens, F. M. Peeters

Electric field tuning of the band gap in graphene multilayers | 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 | 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 | Acta Physica Polonica A.116, p.826, (2009)

A.A.Avetisyan, K. Moulopoulos, A.P.Djotyan

Competing broken-symmetry and rotationally symmetric spin-singlet states in a few-electron quantum dot in a magnetic field | 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 | Physica E 40, 1648 (2008)

A.A.Avetisyan, K.Moulopoulos, A.P.Djotyan

Phase transitions in a few-electron quantum dot in a magnetic field: Wigner phase and broken-symmetry spin-singlet state | Yadernaya Fizika, 71, No 5, 1 (2008)

A. A. Avetisyan, A.P.Djotyan , K. Moulopoulos

Coulomb repulsive correlation in semiconductor quantum dots in the presence of a magnetic field | The Abstracts of International Conference on Semiconductor Compounds (ISCS-2005), Freiburg, Germany, 2005 p. MoP 28

A. A. Avetisyan, A. P.Djotyan , K. Moulopoulos

Coulomb repulsive correlation in A(3) B(5)semiconductor quantum dots in the presence of a magnetic field | The Abstracts of International Conference on Semiconductor Compounds (ISCS-2005), Freiburg, Germany, 2005 p. MoP 28

A.A.Avetisyan, K.Moulopoulos , A.P. Djotyan

Coulomb repulsive correlation in systems with radial confinement: quantum dots and the Overhauser model in an external magnetic field | The Abstracts of Third International workshop on Electron Correlations and Materials Properties, Kos, Greece, July 5-9 (2004)

A.A. Avetisyan, A.P. Djotyan , E.M.Kazaryan

Interband Light absorption in Semiconductor quantum dots connected with the charged and neutral exciton- donor complexes | 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

A.A. Avetisyan , A.P. Djotyan

Exciton-donor complexes in a semiconductor quantum dot | 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)

A.A.Avetisyan, A.P.Djotyan, E.M.Kazaryan, H.A.Sarkisyan

Impurity states in narrow band-gap semiconductor in a high magnetic field | Program and Abstracts 8-th International Conference on Shallow-Level Centers in Semiconductors SLCS-98, Monpellier, Franse, Julay 27-30, 1998, P1-10