https://doi.org/10.1140/epjp/s13360-026-07545-4
Regular Article
Nonlinear dynamics of spin electron acoustic wave under the influence of various quantum effects
1
Department of Physics, Government College University Lahore, Katchery Road, 54000, Lahore, Pakistan
2
Department of Physics, Government Gulberg College for Women (LCW, University), 54000, Lahore, Pakistan
a
This email address is being protected from spambots. You need JavaScript enabled to view it.
b
This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
5
December
2025
Accepted:
6
March
2026
Published online:
3
April
2026
Abstract
In this work, we employ the separate spin evolution quantum hydrodynamic (SSE-QHD) model to study solitary structures, periodic waves, and soliton interactions of spin electron acoustic (SEA) waves under the combined influence of quantum effects, including the quantum Bohm potential, Coulomb exchange interactions, and spin polarization. Using the reductive perturbation method (RPM), we derive the Korteweg–de Vries (KdV) equation along with its periodic solutions. The Hirota’s bilinear method is then employed to analyze multi-soliton interactions. A detailed analysis highlights the distinct roles of the Bohm potential and exchange interactions on periodic structures, single solitons, and multi-soliton dynamics. The present results indicate that double- and triple-soliton propagation is strongly affected by these quantum effects: the exchange interaction modifies both the amplitude and width of the solitons and can even reverse their polarity, while the Bohm potential primarily affects the soliton width without changing polarity. The influence of spin polarization on double- and triple-soliton interactions is also examined. These findings provide new insights into the dynamics of spin-dependent solitary waves in spin-polarized systems, with potential applications in spintronics devices, quantum information processing, and nanoscale electronics.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
