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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Analytical spectrum for a Hamiltonian of quantum dots with Rashba spin-orbit coupling
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Analytical spectrum for a Hamiltonian of quantum dots with Rashba spin-orbit coupling

机译:具有Rashba自旋轨道耦合的量子点的哈密顿量的解析光谱

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We determine the analytical solution for a Hamiltonian describing a confined charged particle in a quantum dot, including Rashba spin-orbit coupling and Zeeman splitting terms. The approach followed in this paper is straightforward and uses the symmetrization of the wave function's components. The eigenvalue problem for the Hamiltonian in Bargmann's Hilbert space reduces to a system of coupled first-order differential equations. Then we exploit the symmetry in the system to obtain uncoupled second-order differential equations, which are found to be the Whittaker-Ince limit of the confluent Heun equations. Analytical expressions as well as numerical results are obtained for the spectrum. One of the main features of such models, namely, the level splitting, is present through the spectrum obtained in this paper.
机译:我们确定一个哈密顿量的解析解,该哈密顿量描述了量子点中的受限带电粒子,包括Rashba自旋轨道耦合和塞曼分裂项。本文采用的方法很简单,并且使用了波动函数分量的对称化。 Bargmann Hilbert空间中哈密顿量的特征值问题简化为耦合一阶微分方程组。然后,我们利用系统中的对称性获得了解耦的二阶微分方程,发现它们是合流Heun方程的Whittaker-Ince极限。获得该光谱的解析表达式和数值结果。这种模型的主要特征之一,即电平分裂,是通过本文获得的频谱呈现的。

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