二维双层模型耦合量子阱中trions的稳定性
Stability of trions in coupled quantum wells modelled by two-dimensional bilayers
摘要：
我们报告变分和扩散量子蒙特卡罗计算的间接trions和双激子的结合能在理想的二维双层系统的有效质量近似下，并与一个库仑$1/r$之间的相互作用载流子。已经研究了各种电子-空穴质量比的临界层分离，在该临界层分离处，trions变得不受束缚，并且发现比双激子的临界层分离大一个数量级。
英文摘要：
We report variational and diffusion quantum Monte Carlo calculations of the binding energies of indirect trions and biexcitons in ideal two-dimensional bilayer systems within the effective-mass approximation, and with a Coulomb $1/r$ interaction between charge carriers. The critical layer separation at which trions become unbound has been studied for various electron-hole mass ratios, and found to be over an order of magnitude larger than the critical layer separation for biexcitons.
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