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Nonlinear spectroscopy of excitonic states in transition metal dichalcogenides
Physical Review B: Condensed Matter and Materials Physics. 2022. Vol. 105. No. 11. Article 115436.
Zhumagulov Y., Vyacheslav D. Neverov, Alexander E. Lukyanov, Gulevich D., Andrey V. Krasavin, Vagov A., Perebeinos V.
Second-harmonic generation (SHG) is a well-known nonlinear spectroscopy method to probe electronic
structure, specifically, in transition metal dichalcogenide (TMDC) monolayers. This work investigates the
nonlinear dynamics of a strongly excited TMDC monolayer by solving the time evolution equations for the
density matrix. It is shown that the presence of excitons qualitatively changes the nonlinear dynamics leading,
in particular, to a huge enhancement of the nonlinear signal as a function of the dielectric environment. It is also
shown that the SHG polarization angular diagram and its dependence on the driving strength are very sensitive
to the type of exciton state. This sensitivity suggests that SHG spectroscopy is a convenient tool for analyzing
the fine structure of excitonic states.
Language:
English
Pikina E., Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2026 Vol. 113 No. 5
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AIVBVI semiconductors, particularly lead chalcogenides, remain key materials for mid-wave infrared (MWIR) photodetection due to their narrow bandgap and exceptional carrier transport properties. However, the realization of high-quality p-type PbTe thin films, suitable for p–n junction devices, remains a technological challenge. In this work, we report the fabrication of high-mobility p-type PbTe thin films grown on ...
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Воронеж: Издательский дом ВГУ, 2026.
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Gimaev R., Karpenkov A., Shelkovyi F. et al., Journal of Alloys and Compounds 2026 No. 1080 Article 190307
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Beck M. E., Seidov S., Mukhin S., Physical Review A: Atomic, Molecular, and Optical physics 2026 Vol. 113 No. 6 Article 063706
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Afanasiev S., Agakishiev G., Aleksandrov A. et al., Journal of High Energy Physics 2026 Vol. 2026 Article 48
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Budkov Y., Kalikin N., Journal of Chemical Physics 2026 Vol. 165 Article 064506
A self-consistent statistical-mechanical theory of the Hall effect in electrolyte solutions is developed by extending the self-consistent Debye–Hückel–Onsager (SCDHO) framework to crossed electric and magnetic fields. The theory incorporates non-local ionic charge distributions via Slater-type form factors, regularizing the Coulomb interaction at short range, and accounts for dielectric friction through ion-specific coefficients, employing experimental values ...
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Ali S., Bocharnikov V., Ratnikov F. et al., Sensors 2026 Vol. 26 No. 16 Article 5024
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Ponomarev A., Aleksandrov N., Journal of Physics D: Applied Physics 2026 Vol. 59 No. 31 Article 315205
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Khrapai V., Tikhonov E., Nature Physics 2026 P. 1198–1199
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G. G. Bondarenko, Kristya V. I., Savichkin D. O. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2026 Vol. 20 No. 2 P. 417–423
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Shavlovich A. V., Reshetov I., Tagantsev D. et al., Journal of Physics: Condensed Matter 2024 Vol. 36 No. 21 Article 21LT01
Two sodium phosphate glasses with different structure (meta- and orthophosphate ones) were thermally poled well below the glass transition temperatures. Glass with an orthophosphate structure (glass LA30) demonstrated a typical behavior of polarization current, that is, monotonic current decrease; however, in glass with a metaphosphate structure (glass LA10) the current first increased for 15–20 min and only then started ...
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Kan G., Scherbak S., Pleshakov O. et al., Optical Materials 2025 Vol. 160 Article 116770
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