论文标题
磷酸量子环中的Aharonov-Bohm振荡：质量各向异性补偿通过限制潜力
Aharonov-Bohm oscillations in phosphorene quantum rings: mass anisotropy compensation by confinement potential
论文作者
论文摘要
我们考虑Aharonov-bohm（AB）对磷酸单层内静电定义的量子环的限制电子基态的效应。由于环周围的持续电流循环中断，磷烯淬灭的有效质量的强度各向异性对圆环的地下振荡。隔离电位的椭圆形变形可以补偿有效质量的各向异性，并通过AB周期性产生地面均等转化。此外，确定了半肌的特异性比率，该比率与光谱与圆形量子环和各向同性有效质量相同。我们确定了一个广义的角动量算子，该算子与连续性哈密顿量的通勤时间达到了闭合相同平价和自旋状态的半轴所选比率。还讨论了两电子基层状态的地面振荡。
We consider the Aharonov-Bohm (AB) effect on a confined electron ground state in a quantum ring defined electrostatically within the phosphorene monolayer. The strong anisotropy of effective masses in phosphorene quenches ground-state oscillations for a circular ring because of interrupted persistent current circulation around the ring. An elliptic deformation of the confinement potential can compensate for the anisotropy of the effective masses and produce ground-state parity transformations with the AB periodicity. Moreover, a specific ratio of the semiaxes is determined for which the spectrum becomes identical to that of a circular quantum ring and an isotropic effective mass. We identify a generalized angular momentum operator which commutes with the continuum Hamiltonian for the chosen ratio of the semi-axes that closes the avoided crossings of energy levels for states of the same parity and spin. Ground-state oscillations for the two-electron ground state are also discussed.
