中等Rashba自旋轨道耦合半导体量子点中低能电子态的光致自旋极化

IF 2.4 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2025-10-11 DOI:10.1016/j.ssc.2025.116195

G. Dziembaj, G. Przepiórka, T. Chwiej

{"title":"中等Rashba自旋轨道耦合半导体量子点中低能电子态的光致自旋极化","authors":"G. Dziembaj, G. Przepiórka, T. Chwiej","doi":"10.1016/j.ssc.2025.116195","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the spin characteristics of single-electron photon-dressed states in a two-dimensional semiconductor quantum dot (QD). Floquet theory is used to demonstrate strong susceptibility of electron spin to combined effect of Rashba spin–orbit interaction (SOI) and the circular polarization of light that results in high spin polarizability with direction defined solely by the light helicity. This spin-Zeeman like effect is characterized by the light-induced pseudomagnetic field depending on laser and SOI parameters. Calculations performed under typical experimental conditions for In<span><math><msub><mrow></mrow><mrow><mn>0</mn><mo>.</mo><mn>53</mn></mrow></msub></math></span>Ga<span><math><msub><mrow></mrow><mrow><mn>0</mn><mo>.</mo><mn>47</mn></mrow></msub></math></span>As QD as well as the energy and intensities of dressing photons, indicate that this effect would be experimentally observable.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116195"},"PeriodicalIF":2.4000,"publicationDate":"2025-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Light-induced spin polarization of low-energy electron states in semiconductor quantum dot with moderate Rashba spin–orbit coupling\",\"authors\":\"G. Dziembaj, G. Przepiórka, T. Chwiej\",\"doi\":\"10.1016/j.ssc.2025.116195\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the spin characteristics of single-electron photon-dressed states in a two-dimensional semiconductor quantum dot (QD). Floquet theory is used to demonstrate strong susceptibility of electron spin to combined effect of Rashba spin–orbit interaction (SOI) and the circular polarization of light that results in high spin polarizability with direction defined solely by the light helicity. This spin-Zeeman like effect is characterized by the light-induced pseudomagnetic field depending on laser and SOI parameters. Calculations performed under typical experimental conditions for In<span><math><msub><mrow></mrow><mrow><mn>0</mn><mo>.</mo><mn>53</mn></mrow></msub></math></span>Ga<span><math><msub><mrow></mrow><mrow><mn>0</mn><mo>.</mo><mn>47</mn></mrow></msub></math></span>As QD as well as the energy and intensities of dressing photons, indicate that this effect would be experimentally observable.</div></div>\",\"PeriodicalId\":430,\"journal\":{\"name\":\"Solid State Communications\",\"volume\":\"406 \",\"pages\":\"Article 116195\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2025-10-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Solid State Communications\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0038109825003709\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Communications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038109825003709","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}

引用次数: 0

摘要

研究了二维半导体量子点（QD）中单电子光子修饰态的自旋特性。利用Floquet理论证明了电子自旋对Rashba自旋-轨道相互作用（SOI）和光的圆极化的联合效应有很强的敏感性，导致电子自旋具有高的极化率，其方向完全由光螺旋度决定。这种类自旋塞曼效应的特征是光诱导的伪磁场依赖于激光和SOI参数。在典型实验条件下对In0.53Ga0.47As量子点以及修饰光子的能量和强度进行的计算表明，这种效应在实验上是可以观察到的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Light-induced spin polarization of low-energy electron states in semiconductor quantum dot with moderate Rashba spin–orbit coupling

This study investigates the spin characteristics of single-electron photon-dressed states in a two-dimensional semiconductor quantum dot (QD). Floquet theory is used to demonstrate strong susceptibility of electron spin to combined effect of Rashba spin–orbit interaction (SOI) and the circular polarization of light that results in high spin polarizability with direction defined solely by the light helicity. This spin-Zeeman like effect is characterized by the light-induced pseudomagnetic field depending on laser and SOI parameters. Calculations performed under typical experimental conditions for In

_{0.53}

_{0.47}

As QD as well as the energy and intensities of dressing photons, indicate that this effect would be experimentally observable.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.