宽砷化镓/砷化镓量子阱中的巨激子磁-斯塔克效应

IF 2.9 3区物理与天体物理 Q3 NANOSCIENCE & NANOTECHNOLOGY

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2024-10-31 DOI:10.1016/j.physe.2024.116134

D.K. Loginov, I.V. Ignatiev

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引用次数: 0

摘要

我们研究了激子态的磁-斯塔克效应，其波矢量很大，大大超过了光的波矢量。与在同类磁场中观察到的块体材料的类似效应相比，这种磁-斯塔克效应可称为 "巨 "效应。在这项工作中，我们提出了一个 "巨型 "磁-斯塔克效应的微观模型。该模型不包含任何自由参数。在该模型框架下获得的数值结果定量地描述了早先发表在 Ref.S. Y. Bodnar 等人（2017 年）发表的关于磁场中具有宽 GaAs/AlGaAs 量子阱的异质结构的实验结果。

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Giant excitonic magneto-Stark effect in wide GaAs/AlGaAs quantum wells

We have studied the magneto-Stark effect of exciton states with large wave vectors, significantly exceeding the wave vector of light. This magneto-Stark effect can be called “giant” in comparison with a similar effect observed in bulk materials in comparable magnetic fields. In this work, we propose a microscopic model of the “giant” magneto-Stark effect. The model does not contain any free parameters. The numerical results obtained in the framework of this model quantitatively describe the experimental results published earlier in Ref. S. Y. Bodnar et al., (2017) for a heterostructure with a wide GaAs/AlGaAs quantum well in a magnetic field.

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来源期刊

Physica E-low-dimensional Systems & Nanostructures 物理-纳米科技

CiteScore

7.30

自引率

6.10%

发文量

356

审稿时长

65 days

期刊介绍： Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals. Both theoretical and experimental contributions are invited. Topics suitable for publication in this journal include spin related phenomena, optical and transport properties, many-body effects, integer and fractional quantum Hall effects, quantum spin Hall effect, single electron effects and devices, Majorana fermions, and other novel phenomena. Keywords: • topological insulators/superconductors, majorana fermions, Wyel semimetals; • quantum and neuromorphic computing/quantum information physics and devices based on low dimensional systems; • layered superconductivity, low dimensional systems with superconducting proximity effect; • 2D materials such as transition metal dichalcogenides; • oxide heterostructures including ZnO, SrTiO3 etc; • carbon nanostructures (graphene, carbon nanotubes, diamond NV center, etc.) • quantum wells and superlattices; • quantum Hall effect, quantum spin Hall effect, quantum anomalous Hall effect; • optical- and phonons-related phenomena; • magnetic-semiconductor structures; • charge/spin-, magnon-, skyrmion-, Cooper pair- and majorana fermion- transport and tunneling; • ultra-fast nonlinear optical phenomena; • novel devices and applications (such as high performance sensor, solar cell, etc); • novel growth and fabrication techniques for nanostructures