Dr. Maciej Koperski is an Assistant Professor at the Department of Materials Science and Engineering. His research interests cover a broad range of phenomena in materials, including magneto-optics, quantum light emission, magnetism and/or electronics.
The work of Dr. Koperski contributed to development of single photon emitters in van der Walls materials, excitonic physics at different dimensionalities and diverse spin/orbital wave function compositions or electrical excitations of interband transitions in material systems with unique band structure.
Dr. Koperski co-authored reviews on topical subjects in condensed matter physics: magneto-optical properties of transition metal chalcogenides (Nanophotonics 2017) and magnetism in 2D systems (Nature Nanotechnology 2019).
Research Interests
Quantum phenomena in materials (quantum light emission, ferromagnetism); excitonic physic at different dimensionalities; optoelectronic, vibrational, magnetic and structural properties of materials.
Group Webpage
https://ifim.nus.edu.sg/koperski/
Ph.D. candidate and Research Fellow positions, projects for students, information on research, publications, and laboratory facilities available at: https://ifim.nus.edu.sg/koperski/
Selected Publications
- T. Zhang, M. Grzeszczyk, J. Li, W. Yu, H. Xu, P. He, L. Yang, Z. Qiu, H. Lin, H. Yang, J. Zeng, T. Sun, Z. Li, J. Wu, M. Lin, K. P. Loh, C. Su, K. S. Novoselov, A. Carvalho, M. Koperski, J. Lu, Degradation Chemistry and Kinetic Stabilization of Magnetic CrI3, J. Am. Chem. Soc. (2022).
- M. Koperski, K. Pakuła, K. Nogajewski, A. K. Dąbrowska, M. Tokarczyk, T. Pelini, J. Binder, T. Fąs, J. Suffczyński, R. Stępniewski, A. Wysmołek, M. Potemski, Towards practical applications of quantum emitters in boron nitride, Scientific Reports 11, 15506 (2021).
- Z. Chen, K. Yang, T. Xian, C. Kocabas, S. V. Morozov, A. H. Castro Neto, K. S. Novoselov, D. V. Andreeva, M. Koperski, Electrically Controlled Thermal Radiation from Reduced Graphene Oxide Membranes, ACS Applied Materials & Interfaces 13, 27278-27283 (2021).
- M. Koperski, D. Vaclavkova, K. Watanabe, T. Taniguchi, K. S. Novoselov, M. Potemski, Midgap radiative centers in carbon-enriched hexagonal boron nitride, Proceedings of the National Academy of Sciences 24, 13214-13219 (2020).
- J. Zultak, S. J. Magorrian, M. Koperski, A. Garner, M. J. Hamer, E. Tóvári, K. S. Novoselov, A. A. Zhukov, Y. Zou, N. R. Wilson, S. J. Haigh, A. V. Kretinin, V. I. Fal’ko, R. Gorbachev, Ultra-thin van der Waals crystals as semiconductor quantum wells, Nature Communications 11, 125 (2020).
- M. Gibertini, M. Koperski, A. F. Morpurgo, K. S. Novoselov, Magnetic 2D materials and heterostructures, Nature nanotechnology 14, 408-419 (2019)
- E. M. Alexeev, D. A. Ruiz-Tijerina, M. Danovich, M. J. Hamer, D. J. Terry, P. K. Nayak, S. Ahn, S. Pak, J. Lee, J. Inn Sohn, M. R. Molas, M. Koperski, K. Watanabe, T. Taniguchi, K. S. Novoselov, R. V. Gorbachev, H. Suk Shin, V. Fal’ko, A. I. Tartakovskii, Resonantly hybridized excitons in moiré superlattices in van der Waals heterostructures, Nature 567, 81-86 (2019).
- A. O. Slobodeniuk, M. Koperski, M. R. Molas, P. Kossacki, K. Nogajewski, M. Bartos, K. Watanabe, T. Taniguchi, C. Faugeras, M. Potemski, Fine structure of K-excitons in multilayers of transition metal dichalcogenides, 2D Materials 6, 025026 (2019).
- A. V. Tyurnina, D. A. Bandurin, E. Khestanova, V. G. Kravets, M. Koperski, F. Guinea, A. N. Grigorenko, A. K. Geim, I. V. Grigorieva, Strained bubbles in van der Waals heterostructures as local emitters of photoluminescence with adjustable wavelength, ACS photonics 6, 516-524 (2019).
- M. J. Hamer, J. Zultak, A. V. Tyurnina, V. Zólyomi, D. Terry, A. Barinov, A. Garner, J. Donoghue, A. P. Rooney, V. Kandyba, A. Giampietri, A. Graham, N. Teutsch, X. Xia, M. Koperski, S. J. Haigh, V. I Fal’ko, R. V. Gorbachev, N. R. Wilson, Indirect to direct gap crossover in two-dimensional InSe revealed by angle-resolved photoemission spectroscopy, ACS Nano 13, 2136-2142 (2019).
- A. Arora, M. Koperski, A. Slobodeniuk, K. Nogajewski, R. Schmidt, R. Schneider, M. R. Molas, S. Michaelis de Vasconcellos, R. Bratschitsch, M. Potemski, Zeeman spectroscopy of excitons and hybridization of electronic states in few-layer WSe2, MoSe2 and MoTe2, 2D Materials 6, 015010 (2018).
- M. Koperski, M. R. Molas, A. Arora, K. Nogajewski, M. Bartos, J. Wyzula, D. Vaclavkova, P. Kossacki, M. Potemski, Orbital, spin and valley contributions to Zeeman splitting of excitonic resonances in MoSe2, WSe2 and WS2 Monolayers, 2D Materials 6, 015001 (2018).
- M. Koperski, K. Nogajewski, M. Potemski, Single photon emitters in boron nitride: More than a supplementary material, Optics Communications 411, 158-165 (2018).
- M. Koperski, M. R. Molas, A. Arora, K. Nogajewski, A. O Slobodeniuk, C. Faugeras, M. Potemski, Optical properties of atomically thin transition metal dichalcogenides: observations and puzzles, Nanophotonics 6, 1289-1308 (2017).
- T. Jakubczyk, V. Delmonte, M. Koperski, K. Nogajewski, C. Faugeras, W. Langbein, M. Potemski, J. Kasprzak, Radiatively Limited Dephasing and Exciton Dynamics in MoSe2 Monolayers Revealed with Four-Wave Mixing Microscopy, Nano Letters 16, 5333-5339 (2016).
- T. Smoleński, M. Goryca, M. Koperski, C. Faugeras, T. Kazimierczuk, A. Bogucki, K. Nogajewski, P. Kossacki, M. Potemski, Tuning Valley Polarization in a WSe2 Monolayer with a Tiny Magnetic Field, Physical Review X 6, 021024 (2016).
- M. Koperski, K. Nogajewski, A. Arora, V. Cherkez, P. Mallet, J.-Y. Veuillen, J. Marcus, P. Kossacki, M. Potemski, Single photon emitters in exfoliated WSe2 structures, Nature Nanotechnology 10, 503-506 (2015).
- A. Arora, K. Nogajewski, M. Molas, M. Koperski, M. Potemski, Exciton band structure in layered MoSe2: from a monolayer to the bulk limit, Nanoscale 7, 20769-20775 (2015).
- A. Arora, M. Koperski, K. Nogajewski, J. Marcus, C. Faugeras, M. Potemski, Excitonic resonances in thin films of WSe2: from monolayer to bulk material, Nanoscale 7, 10421-10429 (2015).
- M. Goryca, M. Koperski, P. Wojnar, T. Smoleński, T. Kazimierczuk, A. Golnik, P. Kossacki, Coherent Precession of an Individual 5/2 Spin, Physical Review Letters 113, 227202 (2014).