Nonmonotonic entropy evolution  of carriers in graphene generated by strong laser field

Konstantin Y. Kravtsov; Vadim V. Dmitriev; Anatoly D. Panferov; Stanislav A. Smolyansky; David B. Blaschke; N. T. Gevorgyan

doi:10.1117/12.2521602

3 June 2019 Nonmonotonic entropy evolution of carriers in graphene generated by strong laser field

Konstantin Y. Kravtsov, Vadim V. Dmitriev, Anatoly D. Panferov, Stanislav A. Smolyansky, David B. Blaschke, N. T. Gevorgyan

Author Affiliations +

Proceedings Volume 11066, Saratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling; 110661J (2019) https://doi.org/10.1117/12.2521602
Event: International Symposium on Optics and Biophotonics VI: Saratov Fall Meeting 2018, 2018, Saratov, Russian Federation

Abstract

Based on the non-perturbative kinetic theory of the electron-hole pair excitation (EHE) in graphene under influence of a variable electromagnetic field, we investigate some features of the nonmonotonic evolution of entropy in the framework of the low-energy approach for different configurations of the linear and circular polarization laser fields. Such a character of the entropy change in graphene is stipulated by the action of the external field and the difference in the in− and out− states of the system, which is characteristic for field-induced phase transitions. A similar effect is known in the theory of the vacuum creation of an electron-positron plasma (EPP) under the action of a strong electromagnetic field, but has its own features.

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Konstantin Y. Kravtsov, Vadim V. Dmitriev, Anatoly D. Panferov, Stanislav A. Smolyansky, David B. Blaschke, and N. T. Gevorgyan "Nonmonotonic entropy evolution of carriers in graphene generated by strong laser field", Proc. SPIE 11066, Saratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling, 110661J (3 June 2019); https://doi.org/10.1117/12.2521602

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