Effects of intrinsic spin–orbit coupling, Rashba coupling & bias voltage in case of bilayer graphene: Thermoelectric properties

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

Solid State Communications Pub Date : 2025-08-13 DOI:10.1016/j.ssc.2025.116085

Shweta Kumari , Ritika , Karuna , Surender Pratap , Pankaj Bhalla

引用次数: 0

Abstract

This paper extends the previous study on the electronic band structure of bilayer graphene (BG) under the influence of intrinsic spin–orbit interaction (ISOI), intralayer Rashba spin–orbit interactions (RSOI), and bias voltage (BV), where eigen values were calculated using the tight-binding (TB) approximation (van Gelderen and Smith, 2010). To better observe the effect of ISOI on band gap, we have increased its intensity beyond typical experimental values. Our results, evaluated at 200 K, 300 K, and 400 K, show that the application of BV and spin–orbit interactions significantly enhances thermoelectric performance, with the maximum electronic figure of merit reaching 0.47 when all interactions are present.

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双层石墨烯的本征自旋轨道耦合、Rashba耦合和偏置电压的影响：热电性质

本文扩展了先前在本征自旋-轨道相互作用（ISOI）、层内Rashba自旋-轨道相互作用（RSOI）和偏置电压（BV）影响下双层石墨烯（BG）电子带结构的研究，其中本征值是使用紧密结合（TB）近似计算的（van Gelderen和Smith， 2010）。为了更好地观察ISOI对带隙的影响，我们增加了ISOI的强度，超出了典型的实验值。在200 K、300 K和400 K下，我们的结果表明，BV和自旋轨道相互作用的应用显著提高了热电性能，当所有相互作用都存在时，最大电子优值达到0.47。

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.