压力对立方锑化铟声学泛音的影响

IF 2.1 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2024-11-21 DOI:10.1016/j.ssc.2024.115766

Taras Palasyuk , Cezariusz Jastrzebski , Igor Antoniazzi , Maciej R. Molas , Krzysztof Zberecki , Elzbieta Litwin-Staszewska , Aleksander Khachapuridze , Adam Babinski , Izabella Grzegory , Sylwester Porowski

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引用次数: 0

摘要

利用拉曼光谱研究了压力对立方锑化铟（InSb）中低能声子光散射特性的影响。通过实现光学布拉格滤波器，可以以明确的方式测量布里渊区（2TA(X)） X点附近的横向声子的泛音散射，从而分析其线形。因此，在声子模式中检测到明显的谱线拓宽，证实了我们之前提出的在室温下压缩时横向晶格振动的相当大的非调和性。本文报道的密度泛函理论（DFT）计算的新结果表明，声子在X和K临界点附近的泛音具有相似的压力依赖性，这合理地解释了在压力下光谱测量中2TA(X)和2TA(K)模式之间缺乏能量区分。

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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Pressure effect on acoustical overtones in cubic Indium Antimonide

The influence of pressure on the light scattering properties of low-energy acoustical phonons in cubic Indium Antimonide (InSb) has been investigated by Raman spectroscopy. By implementing optical Bragg filters, the overtone scattering from transverse acoustical phonons near the X point of Brillouin zone (2TA(X)) could be measured in an explicit manner allowing for analysis of its lineshape. Accordingly, a significant line broadening was detected for this phonon mode corroborating our previous suggestion of considerable anharmonicity of the transverse lattice vibration upon compression at room temperature. Herein reported new results of density functional theory (DFT) calculations indicated similar pressure dependence for overtones of acoustical phonons near the X and the K critical points that plausibly accounted for the lack of energy discrimination between 2TA(X) and 2TA(K) modes in spectroscopic measurements under pressure.

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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.