Manipulating electron spins by applying electric instead of magnetic fields is faster, more energy efficient and spatially confined, making the investigation one of the most active research fields in solid-state physics and materials science. We propose a unique approach to this topic by exploiting the unique dielectric properties of quantum paraelectrics KTaO3 and SrTiO3 doped with S-state paramagnetic ions. Due to high lattice polarizability (permittivity up to 25000), a significant (up to two orders of magnitude) amplification of coupling of electron spins with electric field is anticipated for these ions. Particular attention will be given to electric dipole centers, where a strong interplay between spins and electric dipoles is expected. Using advanced magnetic resonance techniques at frequencies up to 1 THz, we also intend to shed light on the promising applications of these materials in quantum information processing, as a media for hosting spin-qubits that can be substantially more energy efficiently and coherently controlled by electric fields.

Klíčová slova
spin-electric control;quantum paraelectrics;electron paramagnetic resonance;spin coherence; spintronics;spin-qubits;quantum information processing

23-05578S

angličtina

Neugebauer Petr, doc. Dr. Ing., Ph.D. - hlavní řešitel

Magneto-Optická a THz Spektroskopie
- odpovědné pracoviště (22.3.2022 - nezadáno)
Magneto-Optická a THz Spektroskopie
- příjemce (22.3.2022 - nezadáno)

Trubitsyn, MP.; Laguta, V.; Panchenko, TV.; Volnianskii, MD.; Laguta, O.; Osetsky, AY.; Diachenko, AO. Ferroelectric phase transition in LiNaGe₄O₉ crystal studied by EPR of Mn⁴⁺ and optical absorption spectroscopy. Journal of Applied Physics, 2025, vol. 137, no. 16, ISSN: 1089-7550.
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Martyniuk, O.; Chaudhary, V.; Rhanbouri, MA.; Laguta, O.; Tahsin, M.; Gaskill, DK.; El Fatimy,A .; Neugebauer, P. Quantum dots array: an approach to multipixel devices. Journal of Physics D - Applied Physics, 2025, vol. 58, no. 13, ISSN: 1361-6463.
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HOLIATKIN, M.; SOLODOVNYK, A.; LAGUTA, O.; NEUGEBAUER, P.; KALABUKHOVA, E.; SAVCHENKO, D. Nature of electrically detected magnetic resonance in highly nitrogen-doped 6H-SiC single crystals. PHYSICAL REVIEW B, 2024, vol. 110, no. 12, p. 1-8. ISSN: 2469-9969.
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LAGUTA, O.; PANCHENKO, T.; TRUBITSYN, M.; SIDAK, V.; VOLNIANSKII, M.; OSETSKY, Y.; LAGUTA, V. Optical and EPR spectroscopy of manganese doped LiNaGe₄O₉ single crystals. OPTICAL MATERIALS, 2024, vol. 154, no. 115793, ISSN: 0925-3467.
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LAGUTA, O.; NEUGEBAUER, P.; ZDEG, I.; LAGUTA, V. Structural instability and lattice site occupation of Mn2+ ions in the SrTiO3 quantum paraelectric. PHYSICAL REVIEW B, 2024, vol. 110, no. 2, ISSN: 2469-9950.
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BARTOŠ, M.; ZINKIEWITZ, M.; GRZESZCZYK, M.; KAZIMIERCZUK, T.; NOGAJEWSKI, K.; PACUSKI, W.; WATANABE, K.; TANIGUCHI, T.; WYSMOŁEK, A.; KOSSACKI, P.; POTEMSKI, M.; BABINSKI, A.; MOLAS, M. Raman scattering excitation in monolayers of semiconducting transition metal dichalcogenides. npj 2D Materials and Applications, 2024, vol. 8, no. 1, ISSN: 2397-7132.
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Laguta, V.; Bovtun, V.; Kempa, M.; Laguta, O.; Neugebauer, P.; Simenas, M.; Banys, J.; Kamba, S. Enhancement of microwave fields in pulse EPR of quantum paraelectrics. Applied Physics Letters, 2023, vol. 123, no. 21, ISSN: 1077-3118.
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DUBNICKÁ MIDLÍKOVÁ, J.; ŠEDIVÝ, M.; SOJKA, A.; TADEU SANTANA, V.; DUBROKA, A.; NEUGEBAUER, P. A Versatile Setup for Fourier-Transform Infrared Magneto-Spectroscopy. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2023, vol. 72, no. 1, p. 1-11. ISSN: 1557-9662.
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SOLODOVNYK, A.; LAGUTA, O.; PROKHOROV, A.; SEGANTINI, M.; NAYDENOV, B.; NEUGEBAUER, P.; GREULICH-WEBER, E.; KALABUKHOVA, E.; SAVCHENKO D. Spin dynamics of exchange-coupled nitrogen donors in heavily doped n-type 15R SiC monocrystals: Multifrequency EPR and EDMR study. PHYSICAL REVIEW B, 2023, vol. 107, no. 155202, ISSN: 2469-9969.
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Odpovědnost: Neugebauer Petr, doc. Dr. Ing., Ph.D.