论文标题
在存在磁场的情况下，复合颗粒的隧道
Tunnelling of a composite particle in presence of a magnetic field
论文作者
论文摘要
我们在存在磁场的情况下通过矩形电势屏障提出了一个简单的复合粒子隧穿模型。提供了问题的确切数值解决方案，并讨论了对实际物理情况的适用性。隧道的某些定性特征没有磁相互作用，但也观察到一些新的特征。当磁场打开时，传输光谱中的共振峰通常不会达到$ 100 \％$的传输概率。我们观察到分裂，并在某些情况下扩大传输概率峰。当带有磁场的宽度$ b $很大时，我们会观察到具有能量的自旋叉概率的振荡和$ b $，这是由绕磁场向量的旋转旋转旋转引起的。对于某些相关参数的值，我们还观察到单个粒子情况下低能的隧道概率显着增加。
We present a simple model of composite particle tunnelling through a rectangular potential barrier in presence of magnetic field. The exact numerical solution of the problem is provided and the applicability to real physical situations is discussed. Some qualitative features of tunnelling with no magnetic interaction are retained, but some new ones are also observed. The resonance peaks in transmission spectrum generally do not reach $100\%$ transmission probability when the magnetic field is turned on. We observe splitting and in some cases widening of transmission probability peaks. When the width $b$ of area with magnetic field is large, we observe oscillations of spin-flip probability with energy and $b$ which are caused by Larmor precession of spin about the vector of magnetic field. For some values of relevant parameters we also observe significant increase of tunnelling probability for low energies in the single particle case.
