Carrier localization in defected areas of (Cd, Mn)Te quantum well investigated via Optically Detected Magnetic Resonance employed in the microscale

IF 2.1 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER Solid State Communications Pub Date : 2024-11-19 DOI:10.1016/j.ssc.2024.115755

A. Dydniański , A. Łopion , M. Raczyński , T. Kazimierczuk , K.E. Połczyńska , W. Pacuski , P. Kossacki

引用次数: 0

Abstract

In this work, we study the impact of carrier localization on three quantities sensitive to carrier gas density at the micrometer scale: charged exciton (X

^{+}

) oscillator strength, local free carrier conductivity, and the Knight shift. The last two are observed in a micrometer-scale, spatially resolved optically detected magnetic resonance experiment (ODMR). On the surface of MBE-grown (Cd,Mn)Te quantum well we identify defected areas in the vicinity of dislocations. We find that these areas show a much lower conductivity signal than the pristine part of the sample, while Knight shift values remain approximately unchanged. We attribute this behavior to carrier localization in the defected regions.

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通过微尺度光检测磁共振研究（Cd, Mn）Te 量子阱缺陷区的载流子定位情况

在这项工作中，我们研究了载流子定位对微米尺度载流子气体密度敏感的三个量的影响：带电激子（X+）振荡器强度、局部自由载流子电导率和奈特位移。在微米尺度的空间分辨光学检测磁共振实验（ODMR）中观察到了后两个量。在 MBE 生长的（Cd,Mn)Te 量子阱表面，我们确定了位错附近的缺陷区域。我们发现，这些区域显示的电导信号比样品的原始部分低得多，而奈特位移值大致保持不变。我们将这种行为归因于缺陷区域的载流子局域化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.