Dispersive interactions between standard and Dirac materials and the role of dimensionality

IF 2.9 4区 物理与天体物理 Q2 OPTICS Journal of Nonlinear Optical Physics & Materials Pub Date : 2022-05-06 DOI:10.1088/2515-7639/ac6d80
D. Le, P. Rodriguez-Lopez, L. M. Woods
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引用次数: 2

Abstract

The van der Waals (vdW) interaction plays a prominent role between neutral objects at separations where short ranged chemical forces are negligible. This type of dispersive coupling is determined by the interplay between geometry and response properties of the materials making up the objects. Here, we investigate the vdW interaction between 1D, 2D, and 3D standard and Dirac materials within the Random Phase Approximation, which takes into account collective excitations originating from the electronic Coulomb potential. A comprehensive understanding of characteristic functionalities and scaling laws are obtained for systems with parabolic energy dispersion (standard materials) and crossing linear bands (Dirac materials). By comparing the quantum mechanical and thermal limits the onset of thermal fluctuations in the vdW interaction is discussed showing that thermal effects are significantly pronounced at smaller scales in reduced dimensions.
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标准材料和狄拉克材料之间的色散相互作用和尺寸的作用
范德华(vdW)相互作用在中性物体之间的分离中起着突出的作用,在那里短程化学力可以忽略不计。这种色散耦合是由构成物体的材料的几何和响应特性之间的相互作用决定的。在这里,我们研究了随机相位近似下一维、二维和三维标准材料和狄拉克材料之间的vdW相互作用,该近似考虑了源自电子库仑势的集体激励。对具有抛物型能量色散(标准材料)和交叉线性带(狄拉克材料)的系统的特征函数和标度规律有了全面的理解。通过比较量子力学和热极限,讨论了vdW相互作用中热波动的开始,表明在降维的较小尺度上热效应显著。
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来源期刊
CiteScore
3.00
自引率
48.10%
发文量
53
审稿时长
3 months
期刊介绍: This journal is devoted to the rapidly advancing research and development in the field of nonlinear interactions of light with matter. Topics of interest include, but are not limited to, nonlinear optical materials, metamaterials and plasmonics, nano-photonic structures, stimulated scatterings, harmonic generations, wave mixing, real time holography, guided waves and solitons, bistabilities, instabilities and nonlinear dynamics, and their applications in laser and coherent lightwave amplification, guiding, switching, modulation, communication and information processing. Original papers, comprehensive reviews and rapid communications reporting original theories and observations are sought for in these and related areas. This journal will also publish proceedings of important international meetings and workshops. It is intended for graduate students, scientists and researchers in academic, industrial and government research institutions.
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