Dr.Rasadi Munasinghe – Department of Physics

Dr. C. Rasadi Munasinghe

B.Sc. (UOK), M.Sc., Ph.D. (Georgia State)

Temporary Senior Lecturer

Phone: 011 2758362

Research Interest: Atomic Photoionization, Two-dimensional electron systems, Graphene, Condensed matter physics, Theoretical Physics

Education:

Ph. D. in Theoretical Atomic Physics, Georgia State University, USA.

M.Sc. in Experimental Condensed Matter Physics, Georgia State University, USA.

B.Sc. Special in Physics with First Class Honors, University of Kelaniya, Sri Lanka.

Awards:

Outstanding graduate student award (2018) Department of Physics, Georgia State University, USA.

The gold medal for the best performance in the B.Sc. (Special) degree program in Physics (2013) University of Kelaniya, Sri Lanka.

Publications:

R. Munasinghe, et al., “Electron heating induced by an ac-bias current in the regime of Shubnikov–de Haas oscillation in the high mobility GaAs/Al x Ga1−x As two-dimensional electron system”, Journal of Physics: Condensed Matter 30 (31), 315701 (2018).
R. Munasinghe, “Relativistic and Interchannel Effects on Branching Ratios of Spin-Orbit Doublets”, (2021) Georgia State University.
R. Munasinghe, et al., “Photoionization Branching Ratios of Spin-Orbit Doublets Far Above Thresholds: Interchannel and Relativistic Effects”, Physical Review A 106, 013102 (2022).
R. Nanayakkara, R. L. Samaraweera, B. Gunawardana, C. R. Munasinghe, et al., “Electron heating induced by microwave photoexcitation in the GaAs/AlGaAs two-dimensional electron system”, Physical Review B 98 (3), 035304 (2018).
G. Mani, A. Kriisa, and C. R. Munasinghe., “Radiation-induced magnetoresistance oscillations in monolayer and bilayer Graphene”, Scientific Reports, 13;9(1):7278 (2019).
L. Samaraweera, B. Gunawardana, A. Kriisa, T. R. Nanayakkara, C. R. Munasinghe, et al., “Influence of microwave excitation – power on the narrow negative magnetoresistance effect around B = 0T in the ultra-high mobility GaAs/AlGaAs”, Physica Status Solidi (b) 256 1800610 (2019).
L. Samaraweera, B. Gunawardana, T. R. Nanayakkara, C. R. Munasinghe, et al., “Study of narrow negative magnetoresistance effect in ultra-high mobility GaAs/AlGaAs 2DES under microwave photo-excitation”, Scientific Reports 10 781 (2020).
Ralph Puttner, Jessica B. Martins, Tatiana Marchenko, Oksana Travnikova, Renaud Guillemin, Loic Journel, Iyas Ismail, Gildas Goldsztejn, Dimitris Koulentianos, Denis Ceolin, Maria Luiza Miranda Rocco, Maria Novella Piancastelli, Marc Simon, David A. Keating, C. Rasadi Munasinghe, Pranawa C. Deshmukh, and Steven T. Manson., “Nonstatistical Behavior of the Photoionization of Spin-Orbit Doublets”, Journal of Physics B: Atomic, Molecular and Optical Physics, (2021) 54(8): p. 085001.

Conference Proceedings and abstracts

Rasadi Munasinghe, et al., “Photoionization Branching Ratios of Spin-Orbit Doublets in Rn Far Above Threshold”, American Physical Society (A.P.S.), Division of Atomic and Molecular Physics Meeting (DAMOP22) (2022).
Rasadi Munasinghe, et al., “Photoionization branching ratios of spin-orbit doublets in heavy elements at high energy: Relativistic and interchannel coupling effects in Hg,” International Conference on Photonic, Electronic and Atomic Collisions (2021).
Rasadi Munasinghe, et al., “Relativistic Effects in the Photoionization of Spin-Orbit Doublets Well Above Thresholds,” American Physical Society (A.P.S.) Division of Atomic and Molecular Physics Meeting (DAMOP21) (2021).
Rasadi Munasinghe, et al., “Relativistic effects in the photoionization of Spin-orbit doublets well above threshold,” American Physical Society (A.P.S.) Division of Atomic and Molecular Physics Meeting (DAMOP20) (2020).
Rasadi Munasinghe, et al., “Study of electron heating via the Shubnikov de Haas effect under a current-bias in the high mobility GaAs/AlGaAs two-dimensional electron system”, International Conference on Electronic Properties of Two-Dimensional Systems (2017).
Rasadi Munasinghe, et al., “Effect of carrier heating induced by current bias in the regime of Shubnikov de Haas oscillations in the high mobility GaAs/AlGaAs 2D electron system”, International Conference on High Magnetic Fields in Semiconductor Physics (2018).
Rasadi Munasinghe, et al., “Carrier heating effect induced by ac current bias in GaAs/AlGaAs 2D electron devices”, International Conference on the Physics of Semiconductors (2018).
Rasadi Munasinghe, et al., “Current bias and temperature effect on the Shubnikov de Haas oscillations in high mobility GaAs/AlGaAs two-dimensional system”, American Physical Society (A.P.S.) March Meeting (2017).
Rasadi Munasinghe, et al., “Study of current bias induced carrier heating effect in the regime of Shubnikov de Haas oscillations in high mobility GaAs/AlGaAs two-dimensional electron system”, American Physical Society (A.P.S.) March Meeting (2018).
Rasadi Munasinghe, et al., “Hot electron magneto-transport in the high mobility GaAs/AlGaAs two-dimensional electron system below 1K”, American Physical Society (A.P.S.) March Meeting (2019).
R. Munasinghe and N. W. K. Jayatissa., “Low energy mechanical driver for solar trackers”, Proceedings of the Technical Sessions, 30. 75-81 Institute of Physics Sri Lanka (2014).