阿哈诺夫-玻姆效应在电子束沿半导体纳米管运动的流体力学不稳定性中的体现

IF 0.6 4区 物理与天体物理 Q4 PHYSICS, APPLIED Low Temperature Physics Pub Date : 2024-05-01 DOI:10.1063/10.0025623
Y. Averkov, Yu. V. Prokopenko, V. Yampol’skii
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引用次数: 0

摘要

我们从理论上研究了阿哈诺夫-玻姆效应在管状非相对论电子束流体力学不稳定性中的一种表现形式,该电子束沿着置于同轴直流磁场中的带有介质填充的半导体纳米管运动。计算时考虑了电磁场的迟滞效应。推导出了被研究结构和电子束耦合波的频散方程,以及流体力学不稳定性增量的表达式,并对其进行了数值分析。通过在时间上缓慢变化振幅和相位的方法,研究了体表和表面混合电磁波的非线性稳定机制。激发这种波的物理原因是切伦科夫共振,非线性稳定机制的基础是激发波的场对波束粒子的捕获。数值分析表明,不稳定性的饱和时间和最大场幅取决于纳米管中的磁通量子数量,并随着等于一个磁通量子的周期而变化。这些依赖性是阿哈诺夫-玻姆效应的结果。
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Manifestation of the Aharonov–Bohm effect in hydrodynamic instability of an electron beam moving along a semiconductor nanotube
We theoretically study a manifestation of the Aharonov–Bohm effect in hydrodynamic instability of a tubular nonrelativistic electron beam moving along a semiconductor nanotube with dielectric filling placed in a coaxial dc magnetic field. The calculations are performed with taking into account the retardation effect for electromagnetic fields. The dispersion equation for the coupled waves of the structure under study and the electron beam, as well as the expression for the increment of the hydrodynamic instability have been derived and numerically analyzed. The mechanism of nonlinear stabilization of the hybrid bulk-surface and surface electromagnetic waves is studied by the method of slowly varying in time amplitudes and phases. The physical cause of excitation of such waves is the Cherenkov resonance, and the nonlinear stabilization mechanism is based on the trapping of beam particles by the field of the excited wave. The numerical analysis shows that the time of saturation of the instability and the maximum field amplitudes depend on the number of magnetic flux quanta in the nanotube and changes with the period equal to one magnetic flux quantum. These dependences are the result of the Aharonov–Bohm effect.
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来源期刊
Low Temperature Physics
Low Temperature Physics 物理-物理:应用
CiteScore
1.20
自引率
25.00%
发文量
138
审稿时长
3 months
期刊介绍: Guided by an international editorial board, Low Temperature Physics (LTP) communicates the results of important experimental and theoretical studies conducted at low temperatures. LTP offers key work in such areas as superconductivity, magnetism, lattice dynamics, quantum liquids and crystals, cryocrystals, low-dimensional and disordered systems, electronic properties of normal metals and alloys, and critical phenomena. The journal publishes original articles on new experimental and theoretical results as well as review articles, brief communications, memoirs, and biographies. Low Temperature Physics, a translation of the copyrighted Journal FIZIKA NIZKIKH TEMPERATUR, is a monthly journal containing English reports of current research in the field of the low temperature physics. The translation began with the 1975 issues. One volume is published annually beginning with the January issues.
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