自旋极化对压电半导体量子等离子体中晶格振动与电子波相互作用的影响
Effect of Spin Polarization on Lattice Vibrations and Electron Wave Interactions in Piezoelectric Semiconductor Quantum Plasma
AI总结：
本文研究磁场引起的自旋极化对压电半导体量子等离子体中晶格振动、电子波相互作用及声波放大的影响，采用改进的SSE-QHD模型推导色散关系与增益系数，发现量子效应降低波频率但显著提升声学增益，自旋极化则使频率和放大略有增加。
摘要：
本文研究了由磁场影响下产生的自旋向上和自旋向下电子浓度差异引起的自旋极化，对晶格离子振动-电子波相互作用，以及由此导致的自旋极化压电半导体量子等离子体中声波放大的影响。评估了高密度等离子体介质的介电常数，并由此建立了色散关系。使用针对压电半导体等离子体改进的分离自旋演化量子流体动力学（SSE-QHD）模型，获得了声波的增益系数。研究表明，包括费米压力和量子玻姆势在内的量子效应会降低波频率，而自旋极化则会使其增加。在存在量子效应的情况下，声学增益随频率显著上升。自旋极化也促使声波放大略有增加。
英文摘要：
The effect of spin polarization, induced by the difference in concentration of spin-up and spin-down electrons produced under the influence of a magnetic field, on lattice ion vibrationselectron wave interactions, and the resulting amplification of acoustic waves in spin polarised piezoelectric semiconductor quantum plasma has been studied. The dielectric permittivity of the high-density plasma medium has been evaluated through which the dispersion relation has been set up. The gain coefficient of acoustic waves has been obtained using the modified separate spin evolution quantum hydrodynamic (SSE-QHD) model for piezoelectric semiconductor plasma. The study reveals that quantum effects, including Fermi pressure and quantum Bohm potential, reduce wave frequency while spin polarization increases it. Acoustic gain rises significantly with frequency in the presence of quantum effects. Spin polarization also contributes to a slight increase in acoustic wave amplification.
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